Morgan Stanley Leveraged Finance Conference. Richard Robert, EVP & CFO June 3, 2015

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Transcription:

Morgan Stanley Leveraged Finance Conference Richard Robert, EVP & CFO June 3, 2015

Forward Looking Statements Statements made by representatives of Vanguard Natural Resources, LLC during the course of this presentation that are not historical facts are forward looking statements. These statements are based on certain assumptions and expectations made by the Company which reflect management s experience, estimates and perception of historical trends, current conditions, anticipated future developments and other factors believed to be appropriate. Such statements are subject to a number of assumptions, risks and uncertainties, many of which are beyond the control of the Company, which may cause actual results to differ materially from those implied or anticipated in the forward looking statements. These include risks relating to the satisfaction of the conditions to closing of the acquisition, uncertainties as to timing, financial performance and results, our indebtedness under our revolving credit facility, availability of sufficient cash to pay our distributions and execute our business plan, prices and demand for oil, natural gas and natural gas liquids, our ability to replace reserves and efficiently develop our reserves, our ability to make acquisitions on economically acceptable terms and other important factors that could cause actual results to differ materially from those anticipated or implied in the forward looking statements. See Risk Factors in our most recent annual report on Form 10-K and Item 1A. of Part II Risk Factors in our subsequent quarterly reports on Form 10-Q and any other public filings and press releases. Vanguard Natural Resources, LLC undertakes no obligation to publicly update any forward looking statements, whether as a result of new information or future events. This presentation has been prepared as of May 28, 2015.

Overview of Vanguard Natural Resources Upstream oil & gas LLC, headquartered in Houston, TX; Initial Public Offering VNR October 2007 had a Total Enterprise Value of ~$240mm Monthly distribution of $0.1175 per unit ($1.41 annualized); generates ~8.9% yield at current price of $15.87; In 2012, VNR was the first master limited partnership to institute a monthly cash distribution policy, beginning with our July 2012 distribution In 2013, VNR was the first master limited partnership to issue publicly traded preferred units with its initial 7.875% Series A Cumulative Redeemable Perpetual Preferred Units In total, VNR has raised net proceeds of more than $328 million from three preferred equity offerings At-the-Market Program (ATM) allows us to systematically sell equity at a much more cost effective means In 2014, VNR raised net proceeds of more than $148 million via common equity and $1.2 million via preferred equity Since restarting ATM on March 17, 2015 and thru April 14, 2015 prior to black out window, VNR raised net proceeds of more than $27 million Asset Profile (1) Twenty three strategic acquisitions totaling ~$4.2 bn ~2.03 Tcfe (~339 MMBoe) total proved reserves ~68% proved developed ~27% liquids / 73% gas 2013 Production: 212 MMcfe/d 2014 Production: 327 MMcfe/d 2015E Production: 379 MMcfe/d Market Valuation Company Profile (2) (in millions) COMMON UNITS 86.4 MM PREFERRED UNITS 13.8 MM EQUITY MARKET CAP (incl. preferred) $1,674 TOTAL DEBT (3) $1,908 ENTERPRISE VALUE $3,582 3 (1) Proved reserves as of 12/31/2014 based on SEC reserve report and includes Pinedale acquisition, Hunt Gulf Coast acquisition and recently closed Piceance acquisition. (2) Market data as of 5/28/15 and includes 420,000 Class B units. Based off VNR closing price $15.87. (3) Debt as of 3/31/15.

Experienced Management Team Name Title Prior Affiliations Years of Experience Scott W. Smith President and CEO Ensource Energy The Wiser Oil Company San Juan Partners >34 Richard A. Robert EVP and CFO Enbridge USA Midcoast Energy Resources Various energy-related entrepreneurial ventures >27 Britt Pence Executive Vice President of Operations Anadarko Petroleum Greenhill Petroleum Mobil >30 Mark Carnes Director of Acquisitions Synergy Oil & Gas Petromark Torch Energy Advisors >37 Chris Raper Land Manager Synergy Oil & Gas Amoco Production >35 Rod Banks Marketing Manager Apache Corporation Mariner Energy Producers Energy Marketing >34 4

Geographically Diversified Reserve Base Core Areas Overview Green River Basin Proved Reserves: 765 Bcfe 84% gas and 52% Proved Developed 122 MMcfe/d net production Big Horn Basin Proved Reserves: 104 Bcfe 84% oil and 95% Proved Developed 17 MMcfe/d net production Williston Basin Proved Reserves: 25 Bcfe 94% oil and 96% Proved Developed 9 MMcfe/d net production ~2.03 Tcfe (~339 MMBoe) proved reserves 73% gas and 27% liquids 68% proved developed R/P is 14 years Piceance Basin (1) Proved Reserves: 442 Bcfe 78% natural gas and 77% Proved Developed 100 MMcfe/d net production Permian Basin Proved Reserves: 241 Bcfe 51% oil and 77% Proved Developed 40 MMcfe/d net production Powder River Basin Proved Reserves: 24 Bcfe 100% natural gas and 77% Proved Developed 22 MMcfe/d net production Wind River Basin Proved Reserves: 37 Bcfe 82% natural gas and 95% Proved Developed 9 MMcfe/d net production Arkoma Basin Proved Reserves: 211 Bcfe 91% gas and 80% Proved Developed 50 MMcfe/d net production Proved Reserves by Area ~2.03 Tcfe (~339 MMBoe) 5% 2%1%1% Green River 9% Piceance Arkoma 38% Permian 12% Gulf Coast Big Horn Wind River Williston 10% Powder River Gulf Coast Basin Proved Reserves: 182 Bcfe 63% natural gas and 61% Proved Developed 25 MMcfe/d net production - Primarily Natural Gas - Primarily Oil 22% 5 Note: Proved reserves as of 12/31/2014 based on SEC reserve report. Production represents Q1 2015 average daily net production. Pro forma for the Pinedale acquisition, Hunt Gulf Coast acquisition and recently closed Piceance acquisition. (1) Includes reserves and production for recently closed Piceance acquisition.

High Quality Asset Base Oil Gas NGLs Total Net PV-10 Reserve Category (MMBbls) (Bcf) (MMBbls) (Bcfe) Liquids (%) ($ MM) PV-10 % PDP 35.7 916.2 27.0 1,292.0 29% 2,268.3 76% PDNP 3.4 54.5 1.7 85.6 36% 170.1 6% PUD 10.9 505.2 13.8 653.7 23% 537.3 18% Total Proved Reserves 50.0 1,475.9 42.5 2,031.3 27% 2,975.7 100% 4% 6% 73% 12% 64% 32% 76% 18% 15% 6 Oil Gas NGL PDP PDNP PUD PDP PDNP PUD Note: Proved reserves as of 12/31/14 and SEC pricing.

$ in millions VNR Investment Thesis Strong record of evaluating and integrating assets, completing over $4.2 billion since VNR s IPO in 2007 Designated business development and acquisition evaluation team We review between 125-150 and evaluate approximately 50 acquisition candidates each year Screen ~125-150 opportunities annually Evaluate ~50 Bid ~40 (~$6 Billion in 2013) Close 2-8 $1,400 $1,200 $1,000 $800 $600 $400 $200 $0 2008 2009 2010 2011 2012 2013 2014 2015P # of Deals 2 2 2 8 3 2 4 2* liquids natural gas 7 *Note: 2015P includes recently announced pending VNR LRE merger and pending VNR EROC merger

MCFE / Day 2015 Capital Program Maintaining Production 20% reduction in total 2015 capital budget from 2014 Pinedale and East Haynesville account for 75% of 2015E Budget After consideration of ethane rejection beginning in January 2015, VNR expects 2015 average daily production to stay relatively flat 400,000 300,000 200,000 100,000 8 0 Jan-15 Feb-15 Mar-15 Apr-15 May-15 Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 PDP PINEDALE D&C HAYNESVILLE D&C MAINTENANCE RECOMPLETE STIMULATION RETURN TO PRODUCTION OTHER D&C

Pinedale / East Haynesville Returns Even in today s commodity environment, the Pinedale and East Haynesville generate good rate of returns without assuming any savings on the drilling and completion costs 9 Budget $3.8 MM per well EUR of ~5.5 Bcfe Average program rate of return of 25% Reserves estimation technique allows for selective participation Vertical Wells (2 planned) Budget $2.25 MM per well EUR of ~2.25 Bcfe Expected average rate of return in excess of 50% Anticipate beginning first vertical well in June and drilling the horizontal wells and additional vertical well in succession We anticipate seeing production from the first vertical well in Q3 2015 Horizontal Wells (2 planned) Budget of $7.5 MM per well We anticipate seeing an impact in production from the horizontal wells by Q4 2015

Strategy Dependent on Acquisitions 1) Continue to Make Accretive Acquisitions- Take advantage of significant opportunities in 2015 Large inventory in the U.S. of mature oil and natural gas basins which provide significant opportunity for future growth and consolidation 2) Commodity Optionality Today s commodity environment creates a unique opportunity to buy assets at historically attractive pricing Acquiring assets today provides long-term optionality should prices improve on the base PDP assets Drilling inventory that is not economic today can be acquired for little to no value providing future upside potential 3) Sources of Capital Vanguard has many avenues for capital to complete large and small acquisitions ~$266 MM in liquidity based on the proposed Spring Borrowing Base Redetermination of $1.6 billion Opportunistically use at-the-market equity program, which is not disruptive to unit price and less expensive (10% of 3 month daily average volume this could equate to ~$30-$40 MM per month) Utilize VNR units to purchase assets from private sellers Partnering with private equity to acquire larger assets Alternative financing strategies are being considered although we will not rule out an equity offering if the acquisition returns are compelling 10

VNR + LRE Transaction Overview Consideration VNR to acquire LRR Energy, L.P. (LRE) by issuing 0.55 units of VNR for each LRE unit Implied purchase price of $8.93 per LRE common unit based on Vanguard s closing price on April 20, 2015 Transaction Value and Premium Total consideration of approximately $539 million Consideration includes assumption of LRE s net debt of $288 million Purchase price represents a 13% premium to LRE s closing price on April 20, 2015 and an 19% premium to LRR Energy s ten day volume weighted average price Key Conditions Customary closing conditions, including a vote of the LRR Energy unitholders Timing Closing anticipated in the third quarter of 2015 11

LRR Energy, L.P. Overview Publicly traded Upstream MLP formed in November 2011 (NYSE: LRE) Operates more than a dozen fields in 3 regions; Permian Basin, Mid-Continent region, and Gulf Coast region 203 Bcfe of estimated net proved reserves as of December 31, 2014 12 Reserves commodity mix: 39% oil; 48% gas and 13% NGL Asset Profile (2) Permian Region Key fields: Red Lake, Corral Canyon, Pecos Slope Acreage: 149,408 gross (122,002 net) acres 94% operated Proved reserves: 98 Bcfe (68% liquids) Mid-Continent Region Key fields: Potato Hills, East Velma, Putnam, Stroud Acreage: 146,753 gross (27,338 net) acres 77% operated Proved reserves: 85 Bcfe (39% liquids) Gulf Coast Region Key fields: New Years Ridge, George West-Stratton Acreage: 12,837 gross (8,769 net) acres 91% operated Proved reserves: 20 Bcfe (33% liquids) (1) Market data based on 4/17/2015 unit price of $7.79. (2) Reserves based on 12/31/14 SEC reserve report. Permian Region 48% of total reserves ($ in millions) Q1 2015 Production: 23 MMcfe/d Permian Region Mid-Continent Region Gulf Coast Region Capitalization Table (1) Equity Market Capitalization $219 Net Debt 288 Enterprise Value 507 Key Statistics (2) Proved Reserves (Bcfe) 203 % Proved Developed 88% Q1 2015 Production (MMcfe/d) 41 Total Proved Reserve Life (R/P) 14 Prestech Mid-Continent Region 42% of total reserves Q1 2015 Production: 13 MMcfe/d Gulf Coast Region 10% of total reserves Q1 2015 Production: 5 MMcfe/d

VNR: Strategic Rationale VNR + LRE Transaction Transaction adds attractive portfolio of mature, long-lived assets well-suited to upstream MLP structure Mature asset base with proved reserve life of 14 years Adds additional scale in Permian and Arkoma Basins Provides exposure to high margin, liquids-weighted production and reserves Vanguard s stated corporate strategy is to grow via accretive acquisitions Transaction is expected to be immediately accretive Accretion is supported by ability to capture substantial G&A synergies Transaction expected to improve credit metrics in 2015 and increase capital markets access Expected to improve 2015 net debt / LTM EBITDA leverage metric Additional scale, diversity and improved liquidity are expected benefits to investors Additional scale for pro forma entity in reduced commodity price environment Greater leverage of operating expenses over larger organization Elimination of duplicative public company expenses Reduced per unit field expenses from potential operational synergies in Permian and Arkoma Basins Larger combined float with greater trading liquidity for unitholders 13

VNR + EROC Transaction Overview Consideration VNR to acquire Eagle Rock Energy by issuing 0.185 units of VNR for each EROC unit Implied purchase price of $3.05 per Eagle Rock Energy common unit based on Vanguard s closing price on May 21, 2015 Transaction Value and Premium Total consideration of approximately $614 million Consideration includes assumption of EROC s net debt of $140 million (1) Purchase price represents a 24% premium to EROC s closing price on May 21, 2015 Key Conditions Customary closing conditions, including a vote of the Eagle Rock Energy unitholders and the Vanguard unitholders Timing Closing anticipated in the third quarter of 2015 14 (1) Includes $73 million of RGP unit value based on ~3.2 million RGP units owned as of March 31, 2015 and RGP unit price of $22.87. On April 30, 2015, RGP units were converted to ETP units per the ETP/RGP merger agreement.

Eagle Rock Energy Partners, L.P. Overview Publicly traded upstream MLP formed in May 2006 (NASDAQ: EROC) based in Houston, TX Owns operated and non-operated wells located in four significant regions: Mid-Continent, Alabama, Permian and East Texas/South Texas/Mississippi 318 Bcfe of estimated net proved reserves as of December 31, 2014 Reserves commodity mix: 53% gas, 21% oil and 26% NGL ($ in millions) Capitalization Table (1) Equity Market Capitalization $375 Net Debt 140 Enterprise Value 515 15 Asset Profile (2) Mid-Continent Region Key producing areas: Golden Trend, Cana (Woodford), Springer, Verden field, Granite Wash, Cleveland, Arkoma Acreage: 150,314 net acres (97% HBP) 307 operated / 1,059 non-operated wells (84% / 8% WI, respectively) Proved reserves: 226.9 Bcfe (37% liquids) Gulf Coast Region (Includes Alabama and East Texas/South Texas/Mississippi, or ETX/STX/MS ) Key producing areas: Big Escambia Creek, Flomaton, Fanny Church, Smackover formation, Jourdanton field, Atascosa county Acreage: 59,012 gross (29,653 net) acres 63 operated / 105 non-operated wells Proved reserves: 69.7 Bcfe (74% liquids) Permian Region Key producing areas: Ward, Pecos and Crane counties Acreage: 22,666 net acres (96% HBP) 191 operated / 53 non-operated wells Proved reserves: 21.7 Bcfe (66% liquids) (1) Market data based on 5/21/2015 unit price of $2.45. Net debt includes $73 million of ETP unit value. (2) Reserves based on 12/31/14 SEC reserve report. 12 year R/P ratio based of 2014YE reserves / LTM production as of 3/31/15. Key Statistics (2) Proved Reserves (Bcfe) 318 % Proved Developed 78% Q1 2015 Production (MMcfe/d) 79.7 Total Proved Reserve Life (R/P) 12 12.0x years Mid-Continent Region Permian Region Note: Proved and probable reserves as of 12/31/14 based on SEC pricing. (1) Based on 1Q15 Production. (2) Well count based on gross operated and gross nonoperated wells. Gulf Coast Region

VNR: Strategic Rationale VNR + EROC Transaction Transaction adds attractive portfolio of mature, long-lived assets well-suited to upstream MLP structure Mature asset base with proved reserve life of 12 years Adds scale in Permian Basin and Mid-Continent region Provides exposure to high margin, liquids-weighted production and reserves Vanguard s stated corporate strategy is to grow via accretive acquisitions to cash flow per unit Transaction is expected to be neutral in 2015 and accretive in 2016 and beyond Accretion is supported by ability to capture substantial G&A synergies Transaction expected to improve credit metrics in 2015 Eagle Rock s low leverage will positively impact Vanguard s debt metrics and credit profile Additional scale and diversity expected to be viewed favorably by both debt and equity markets Additional scale for pro forma entity in reduced commodity price environment Greater leverage of operating expenses over larger operating platform Elimination of duplicative public company expenses Reduced per unit field expenses from potential operational synergies in Permian and Mid-Continent Larger combined float with greater trading liquidity for unitholders 16

Attractive Operational Overlap VNR + LRE + EROC Combined VNR OPERATIONS 17 PENDING LRE MERGER PENDING EROC MERGER

Operational Metrics of Pro Forma Company Vanguard LRR Energy Eagle Rock Energy PF Vanguard Reserves (1) by Category PUD 32% PDNP 4% PDP 64% PDNP 15% PUD 12% PDP 73% PDNP 6% PUD 22% PDP 72% PUD 29% PDNP 5% PDP 66% Q1 2015 Production by Region (2) Powder River 6% Wind River 2% 2,031 Bcfe Williston 2% Big Horn 4% Mid-Con 13% Gulf Goast 6% Piceance 26% Green River 31% Permian 10% 203 Bcfe Gulf Goast 12% Permian 57% Mid-Con 31% Gulf Goast 28% Permian 6% 318 Bcfe Mid-Con 66% 2,553 Bcfe Powder Big Horn River 3% 4% Williston 2% Wind River 2% Gulf Goast 10% Piceance 20% Green River 24% Mid-Con 22% Permian 13% 394 MMcfe/d 41 MMcfe/d 80 MMcfe/d 515 MMcfe/d Q1 2015 Revenue by Hydrocarbon Gas 56% NGL 8% Oil 36% Gas 24% NGL 7% Oil 69% NGL 17% Gas 29% Sulfur 9% Oil 45% Gas 47% NGL 9% Sulfur 2% Oil 42% $99 MM $18 MM $30 MM $146 MM 18 Source: Management presentation, company investor presentations, company projections and company websites. (1) Reserves based on 12/31/14 SEC reserve report. (2) EROC Gulf Coast includes Alabama and ETX/STX/MS.

Financial Overview

Pro Forma Capitalization and Liquidity VNR + LRE + EROC Expected to improve 2015 and beyond leverage metrics Capitalization Table (3/31/15) ($ in millions) Vanguard LRR Energy Eagle Rock Pro Forma VNR Cash $15 $3 $0 $17 RGP Unit Value (1) -- -- 73 73 Credit Facility 1,330 240 162 1,732 7.875% Senior Notes due 2020 550 -- -- 550 Term Loan -- 50 -- -- 8.375% Senior Notes due 2019 -- -- 51 51 Lease Financing Obligations 28 -- -- 28 Total Debt 1,908 290 213 2,361 Member's Equity (2) Common and Class B Units 1,051 180 315 1,545 Series A Preferred Units 62 -- -- 62 Series B Preferred Units 169 -- -- 169 Series C Preferred Units 104 -- -- 104 Total Member's Equity 1,386 180 315 1,881 Total Capitalization 3,294 470 528 4,242 Liquidity (3) 266 (40) 181 407 Metrics: Net Debt / 2014 EBITDA (4) 3.5x 3.4x 1.2x 3.0x Net Debt / Capitalization 57% 61% 27% 54% Net Debt / Proved Reserves ($ / Mcfe) $0.93 $1.41 $0.44 $0.89 Net Debt / Proved Developed Reserves ($ / Mcfe) $1.37 $1.62 $0.56 $1.26 20 (1) Based on ~3.2 million RGP units owned as of March 31, 2015 and RGP unit price of $22.87. On April 30, 2015, RGP units were converted to ETP units per the merger agreement. (2) Member's equity as of March 31, 2015. (3) Includes $4.5 million in outstanding letters of credit for Vanguard. Vanguard and LRR Energy borrowing base based on proposed Spring redetermination amounts of $1,600 million and $200 million, respectively. Pro forma Vanguard liquidity calculation includes the $50 million term loan being paid off via proceeds from ATM common unit sales. Eagle Rock liquidity includes RGP unit value. EROC borrowing base redetermined on 4/1/15 to $270 million. (4) Includes pro forma impact of acquisitions completed by Vanguard during 2014.

VNR Has Actively Taken Steps to Improve Liquidity and the Balance Sheet Effective January 2015, VNR reduced the monthly distribution to $0.1175 Cut 2015 capital expenditures by 20%; all maintenance capital Filed new $625 million ATM shelf in March 2015 to opportunistically raise equity capital Held numerous discussions with outside partners / funding sources to provide capital for future acquisitions Spring Borrowing Base Redetermination Meeting held on May 12, 2015 Proposed Borrowing Base of $1.6 Billion with automatic $200 million increase upon closing of LRE Merger Proposed Amendment to leverage covenant 2015 5.5x Debt / Adjusted EBITDA 2016 5.25x Debt / Adjusted EBITDA 2017 and beyond 4.5x Debt / Adjusted EBITDA Restructured existing 2015 oil and natural gas three-way collars into fixed price swaps 21

MMBtu MBbls Hedges Mitigate Commodity Price Risk Transaction modestly improves Vanguard s hedge book, increasing weighted average price and volumes hedged Pro Forma Natural Gas Hedges Pro Forma Oil Hedges 140,000 120,000 $4.30 $4.35 $4.19 7,000 6,000 $83.27 $86.71 $84.95 100,000 80,000 60,000 16% 31% 1% 11% 62% 5,000 4,000 3,000 $77.14 16% 10% 8% 41% 6% 84% 83% 40,000 20,000-83% 58% 13% 25% 2015 2016 2017 2,000 1,000-19% 66% 34% 16% 17% 2015 2016 2017 2018 Swaps Three Way Collars Unhedged Swaps Three Way Collars Collars Puts Unhedged 22 Note: Hedge prices reflect a weighted average of swap prices, floor prices on collars and long put prices on three way collars. Assumes additional production from capital spending in 2015 and beyond.

$/Bbl $/Bbl A History of Oil Prices $150 $130 $110 $90 $70 $50 $30 Jan-06 Jul-06 Jan-07 Jul-07 Jan-08 Jul-08 Jan-09 Jul-09 Jan-10 Jul-10 Jan-11 Jul-11 Jan-12 Jul-12 Jan-13 Jul-13 Jan-14 Jul-14 Jan-15 Jul-15 Jan-16 Jul-16 Jan-17 Jul-17 Forward Curve at Yearly High 23 Source: Bloomberg data as of 5/7/15. Forward Curve at Year Low

Longer-Term Short-Term Latest EIA Drilling Productivity Data Arguments for US Oil Production Growth Slowing Arguments Against US Oil Production Growth Slowing As of mid-march, the oil rig count had fallen by 727 since it peaked in October at 1,593 faster than the rate at which gas rigs fell in 2008-09. Producers are holding back wells from completion which will reduce production in the short-term... Capex reductions have been impressive... 30-35% on average in North America. The EIA s Drilling Productivity Report suggest that oil production in the Bakken, Eagle Ford, and Niobrara will slow month-over-month by April. Yearover-year growth will slow meaningfully. Bank redeterminations around April may force some rationalization that has so far been postponed....but producers are very underhedged in longer-dated tenors, and have far less protection than normal in 2H 15 and 2016. Hedges that have been executed in those tenors were struck at a much lower price point. But human capital may take longer to return. Some producers have expressed concern, based on past experience, that once crews leave (possibly for other sectors, in other regions), they can be tough to get back. Only 195 bids were received this week for offshore Federal Gulf of Mexico leases, compared to 380 at the time last year. This was the lowest number of bids received since 1986. The rush of capital into the North American energy space may not recover to levels that are quite as frenetic....but many companies are not reducing production guidance by much. Legacy hedges done at much higher price points protect producers in 1H 15... Producers are focusing exclusively on high-productivity acreage, and postponing more prospective activity. Variable production costs fall with oil prices. Anecdotally, production costs have already fallen by 8-20%, led by services. Past bear markets indicate that they can take about three years to recover as oil prices rise. Efficiency gains, such as multi-pad drilling and a shift from older to newer rigs as lease prices fall mean that producers can do more with less. Some of those gains will be sticky. Equity markets have historically rewarded public companies for growing production regardless of the macro environment. Smaller, non-public companies may require cash flow (reduced though it may be) to stay afloat. Services, and rigs in particular, can return to service very quickly when prices merit... North Dakota has an automatic tax reduction trigger mechanism in place for when oil prices fall. This could be a meaningful percentage of cash costs for independent producers in the Bakken and Three Forks plays (not to mention a big blow to government revenues)....but the backlog of wells awaiting completion will come online quickly when incentivized by price. Industry consolidation and specifically acquisitions by oil majors in the US tight oil space could introduce more industry discipline, resulting in a rate of growth that is slower but also more unshakable... Smaller, older, or more marginal wells (e.g. stripper wells) might get shut-in and not return to production when prices rebound. Banks don t want foreclosures. They are likely to work cooperatively with producers to avoid that outcome...or, asset acquisition by private equity investors may lead to restructuring and refinancing at a lower cost of capital. 24 Note: From CIBC s Commodities Strategy chart, sourced as EIA s Drilling Productivity Report. Retrieved April 24, 2015.

Nat Gas Supply/Demand Fundamentals Globally: Natural gas is the fastest growing fossil fuel, with demand rising at the rate of 1.9%/year over the next two decades to reach 490 Bcf/d while oil falls to just 0.8%/year. (1) Supply in 2015 is expected to increase ~3.0 Bcf/d over 2014 Production is on the rise, mainly in the Marcellus/Utica Northeast expected to be a self-sufficient gas producer by 2018 Gas will have to be exported during summer months because of insufficient storage capacity Associated natural gas continues to rise, which may point to stronger production than the market expects May take time for the oversupply to be worked off, as arresting production momentum requires a sizeable slowdown in supply growth and raising demand structurally could take years Increase of ~2.8 bcf/d in 2015 over 2014 Global and U.S. demand is expected to continue rising Sabine Pass, Dominion Cove Point, Freeport LNG and Cameron LNG currently under construction, 6.7 Bcf/d of Export Capacity 1 st project online late 2015 and completed in stages through 2017 2.4 Bcf/d 2 nd project online in 2017 0.8 Bcf/d 3 rd and 4 th online in 2018 additional 3.5 Bcf/d Other Sources of Increasing Demand: Exports to Mexico are currently ~2 Bcf/d and are expected to increase to ~7 Bcf/d Petrochemical plants to be constructed - ~3 Bcf/d Coal Plant Retirements / Coal-Gas Switching Industrial growth as US economy improves 25 Source: Citi Research (February 25, 2015). Asset Risk Management LNG Global Update (February 2015). (1) According to BP s annual Energy Outlook published February 17, 2015.

2015 Peer Benchmarking Operational / Asset Metrics Proved Reserves (Bcfe) % Proved Developed 4,000 3,500 3,000 2,500 7,304 3,095 2,553 100% 90% 80% 70% 60% 91% 84% 80% 77% 77% 71% 68% 65% 63% 54% 2,000 1,500 1,000 500 2,031 1,892 1,633 1,484 1,454 1,429 1,163 1,001 907 834 50% 40% 30% 20% 10% 43% 43% 34% 0 LINE SD VNR PF VNR BBEP OAS LPI MEMP ARP SFY EVEP CRZO LGCY 0% LGCY EVEP LINE BBEP ARP VNR PF VNR SD MEMP OAS CRZO LPI SFY PD R/P Ratio (years) (1) % Liquids (Proved Reserves) 16 14 12 10 8 6 4 2 0 13.4 x 13.3 x 11.9 x 11.1 x 10.5 x 10.3 x 10.0 x 9.6 x 9.6 x 7.9 x 6.1 x 5.3 x 5.2 x EVEP LINE BBEP ARP SD LGCY MEMP VNR PF VNR OAS LPI SFY CRZO 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 87% 76% 63% 62% 57% 50% 42% 42% 41% 32% 29% 29% 27% OAS CRZO BBEP MEMP LPI LGCY SD LINE SFY VNR PF ARP EVEP VNR 26 Source: Company filings and presentations. Note: Pro forma for closed M&A activity. Data as of 3/31/15. VNR PF includes VNR, LRE and EROC. (1) Based on 2015 Q1 average daily production. VNR based off Q1 2015 average daily production of 394 Mmcfe

2015 Peer Benchmarking Leverage Metrics Asset Coverage (SEC Pricing PV-10 / Debt) (1) 2.5 x 2.5x 2.0 x 2.0x 1.8x 1.8x 1.7x 1.7x 1.6x 1.6x 1.5 x 1.0 x 1.3x 1.3x 1.2x 1.2x 1.1x 0.5 x 0.0 x LPI CRZO LGCY VNR PF SFY OAS MEMP VNR BBEP ARP SD LINE EVEP (FDC + Debt) / Proved Reserves ($ / Mcfe) (2) Debt / PD Reserves ($ / Mcfe) $3.50 $3.00 $2.50 $2.00 $1.50 $3.23 $3.16 $3.02 $2.91 $2.79 $2.54 $2.05 $1.98 $1.84 $1.73 $1.67 $1.36 $1.35 $3.50 $3.00 $2.50 $2.00 $1.50 $3.18 $2.83 $2.69 $2.32 $2.05 $1.91 $1.79 $1.67 $1.37 $1.34 $1.28 $1.26 $1.23 $1.00 $1.00 $0.50 $0.50 $0.00 CRZO EVEP OAS SFY BBEP LPI MEMP LINE ARP LGCY SD VNR PF VNR $0.00 CRZO SFY OAS BBEP LPI MEMP LINE SD VNR ARP LGCY VNR PF EVEP 27 Source: Company filings and presentations. Note: Pro forma for capital markets and closed M&A activity. Data as of 3/31/15. VNR PF includes VNR, LRE and EROC. Pro forma Vanguard debt calculation includes the $50 million term loan being paid off via proceeds from ATM common unit sales. Eagle Rock debt balance includes net impact of RGP unit value. Year-end standardized measure as disclosed divided by latest reported total debt pro forma for capital markets issuances and announced acquisitions. PV-10 values calculated as standard measure of discounted future net cash flows. (1) Future Development Cost as disclosed as of year-end 2014. Debt as of 3/31/15 and Proved Reserves as of 12/31/14.

Investment Questions Invest In MLPs? Medium To Long-Term Investor? Current Income Is Important? Like Potential For Income Growth? Looking For Tax Advantaged Income? OK With Getting A K-1? Invest In Upstream MLPs? Believe Oil/Gas Prices Will Improve? Believe Better Yield Offsets Commodity Price Risk vs. Fixed Fee Midstream Options? Can Handle Near Term Unit Price Volatility? Simply Playing Commodity Prices Better Alternatives Than Upstream MLP s? Believe Inflation Will Increase? Invest In VNR? Believe Increased Natural Gas Demand Will Ultimately Allow Prices To Improve? Believe Our Pending Mergers Will Close? Believe Our Proactive Management Philosophy On Adding Assets An The Current Commodity Price Downturn Will Provide Significant Long-Term Value? 28

Information about the Proposed Merger and Where to Find It 29 This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. In connection with the proposed merger, Vanguard intends to file with the Securities and Exchange Commission (the SEC ) a Registration Statement on Form S-4 that will include a preliminary joint proxy statement of Eagle Rock and Vanguard that also constitutes a preliminary prospectus of Vanguard. After the registration statement has been declared effective by the SEC, a definitive joint proxy statement/prospectus will be sent to (i) security holders of Eagle Rock seeking their approval with respect to the proposed merger and (ii) security holders of Vanguard seeking their approval with respect to the issuance of Vanguard common units in connection with the proposed merger. Vanguard and Eagle Rock also plan to file other documents with the SEC regarding the proposed transaction. INVESTORS AND SECURITY HOLDERS ARE URGED TO CAREFULLY READ THE JOINT PROXY STATEMENT/PROSPECTUS (INCLUDING ALL AMENDMENTS AND SUPPLEMENTS THERETO) AND OTHER DOCUMENTS FILED WITH THE SEC WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED MERGER. Investors and security holders will be able to obtain a free copy of the joint proxy statement/prospectus (if and when it becomes available) and other documents, once such documents are filed by Vanguard and Eagle Rock with the SEC through the website maintained by the SEC at http://www.sec.gov. Copies of the documents filed with the SEC by Vanguard will be available free of charge on Vanguard s internet website at http://www.vnrllc.com or by contacting Vanguard s Investor Relations Department by email at investorrelations@vnrllc.com or by phone at (832) 327-2234. Copies of the documents filed with the SEC by Eagle Rock will be available free of charge on Eagle Rock s internet website at http://www.eaglerockenergy.com or by contacting Eagle Rock s Investor Relations Department by email at info@eaglerockenergy.com or by phone at (281) 408-1203. Participants in the Solicitation Vanguard, Eagle Rock, and their respective directors, executive officers and other members of their management and employees may be deemed to be participants in the solicitation of proxies in connection with the proposed merger. Investors and security holders may obtain information regarding Vanguard s directors, executive officers and other members of its management and employees in Vanguard s Annual Report on Form 10-K for the year ended December 31, 2014, which was filed with the SEC on March 2, 2015, Vanguard s proxy statement for its 2015 annual meeting, which was filed with the SEC on April 20, 2015, and any subsequent statements of changes in beneficial ownership on file with the SEC. Investors and security holders may obtain information regarding Eagle Rock s directors, executive officers and other members of their management and employees in Eagle Rock s Annual Report on Form 10-K for the year ended December 31, 2014, which was filed with the SEC on March 2, 2015, Eagle Rock s proxy statement for its annual meeting, which was filed with the SEC on March 31, 2015 and any subsequent statements of changes in beneficial ownership on file with the SEC. These documents can be obtained free of charge from the sources listed above. Additional information regarding the direct and indirect interests of these individuals will also be included in the joint proxy statement/prospectus regarding the proposed transaction when it becomes available. Forward-Looking Statements This communication includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933. All statements other than historical facts, including, without limitation, statements regarding the expected benefits of the proposed transaction to Vanguard and Eagle Rock and their unitholders, the anticipated completion of the proposed transaction or the timing thereof, the expected future reserves, production, financial position, business strategy, revenues, earnings, costs, capital expenditures and debt levels of the combined company, and plans and objectives of management for future operations, are forward-looking statements. When used in this press release, words such as we may, can, expect, intend, plan, estimate, anticipate, predict, project, foresee, believe, will, should, would or could, or the negative thereof or variations thereon or similar terminology, are generally intended to identify forward-looking statements. It is uncertain whether the events anticipated will transpire, or if they do occur what impact they will have on the results of operations and financial condition of Vanguard, Eagle Rock or of the combined company. Such forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those expressed in, or implied by, such statements. These risks and uncertainties include, but are not limited to: the ability to obtain unitholder approval of the proposed transaction; the ability to complete the proposed transaction on anticipated terms and timetable; Vanguard s and Eagle Rock s ability to integrate successfully after the transaction and achieve anticipated benefits from the proposed transaction; the possibility that various closing conditions for the transaction may not be satisfied or waived; risks relating to any unforeseen liabilities of Vanguard or Eagle Rock; declines in oil, NGL or natural gas prices; the level of success in exploitation, development and production activities; adverse weather conditions that may negatively impact development or production activities; the timing of exploitation and development expenditures; inaccuracies of reserve estimates or assumptions underlying them; revisions to reserve estimates as a result of changes in commodity prices; impacts to financial statements as a result of impairment write-downs; risks related to level of indebtedness and periodic redeterminations of the borrowing base under Vanguard s and Eagle Rock s credit agreements; the ability of Vanguard and Eagle Rock to comply with covenants contained in the agreements governing their indebtedness; ability to generate sufficient cash flows from operations to meet the internally-funded portion of any capital expenditures budget; ability to obtain external capital to finance exploitation and development operations and acquisitions; federal, state and local initiatives and efforts relating to the regulation of hydraulic fracturing; failure of properties to yield oil or gas in commercially viable quantities; uninsured or underinsured losses resulting from oil and gas operations; inability to access oil and gas markets due to market conditions or operational impediments; the impact and costs of compliance with laws and regulations governing oil and gas operations; ability to replace oil and natural gas reserves; any loss of senior management or technical personnel; competition in the oil and gas industry; risks arising out of hedging transactions. Vanguard and Eagle Rock caution that the foregoing list of factors is not exclusive. Additional information concerning these and other risk factors are contained in Vanguard s and Eagle Rock s Annual Reports on Form 10-K for the period ended December 31, 2014, subsequent Quarterly Reports on Form 10-Q, recent Current Reports on Form 8-K and other SEC filings, which are available on the SEC s website, http://www.sec.gov. Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of their dates. Except as required by law, neither Vanguard nor Eagle Rock intends to update or revise its forward-looking statements, whether as a result of new information, future events or otherwise.