Exhibit 99.3

ENTERPRISE OFFSHORE BUSINESS

The Enterprise Offshore Business serves some of the most active drilling and development regions, including deepwater production fields, in the northern Gulf of Mexico offshore Texas, Louisiana, Mississippi and Alabama. The Enterprise Offshore Business includes approximately 2,350 miles of offshore natural gas and crude oil pipelines and six offshore hub platforms.

Offshore Natural Gas and Crude Oil Pipelines

The offshore Gulf of Mexico pipelines provide for the gathering and transportation of natural gas or crude oil from offshore production fields to interconnecting offshore or onshore pipelines or processing facilities. The results of operations from these pipelines are primarily dependent upon the volume of natural gas or crude oil transported and the level of fees charged to shippers. Transportation fees are based either on contractual arrangements or, as in the case of the High Island Offshore System (“HIOS”), tariffs regulated by the FERC. In general, contractual arrangements for offshore pipeline transportation services tend to be long-term in nature and involve life-of-reserve commitments.

The following table presents selected information regarding the offshore natural gas pipelines at December 31, 2014:

On a weighted-average basis, overall utilization rates for the offshore natural gas pipelines were approximately 12.9%, 14.6% and 12.9% during the years ended December 31, 2014, 2013 and 2012, respectively.

The following information describes each of the principal offshore natural gas pipelines. The Enterprise Offshore Business operates the Independence Trail pipeline, Viosca Knoll Gathering System, High Island Offshore System, Falcon Natural Gas Pipeline, Anaconda Gathering System and certain components of the Green Canyon Laterals. Third parties operate the remainder of the offshore natural gas pipelines.

The following table presents selected information regarding the Enterprise Offshore Business’s offshore crude oil pipelines at December 31, 2014:

On a weighted-average basis, overall utilization rates for the Enterprise Offshore Business’s offshore crude oil pipelines were approximately 35.9%, 31.3% and 30.6% during the years ended December 31, 2014, 2013 and 2012, respectively.

The following information describes each of the principal offshore crude oil pipelines, all of which the Enterprise Offshore Business operates.

Offshore Hub Platforms

Offshore hub platforms are important components of the Enterprise Offshore Business’s pipeline operations in the Gulf of Mexico. These platforms are typically used to interconnect the offshore pipeline network; provide an efficient means to perform pipeline maintenance; locate compression, separation and production handling equipment and similar assets; and conduct drilling operations during the initial development phase of an oil and natural gas property.

The results of operations from offshore platform services are primarily dependent upon the level of commodity charges and/or demand-type fees billable to customers. Revenue from commodity charges is based on a fee per unit of volume delivered to the platform (typically per MMcf of natural gas or per barrel of crude oil) multiplied by the total volume of each product delivered. Demand-type fees are similar to firm capacity reservation agreements for a pipeline in that they are charged to a customer regardless of the volume the customer actually delivers to the platform. Contracts for platform services often include both demand-type fees and commodity charges, but demand-type fees generally expire after a contractually fixed period of time and in some instances may be subject to cancellation by customers.

The following table presents selected information regarding the Enterprise Offshore Business’s offshore hub platforms at December 31, 2014:

In addition to the offshore hub platforms, the Enterprise Offshore Business also owns or indirectly owns, through its equity method investees, 17 pipeline junction and service platforms (14 of which it operates). Unlike hub platforms, pipeline junction and service platforms do not have processing capacity.

With respect to natural gas processing capacity, the overall utilization rates (on a weighted-average basis) of the offshore hub platforms were approximately 8.1%, 11.2% and 16.2% during the years ended December 31, 2014, 2013 and 2012, respectively. With respect to crude oil processing capacity, the overall utilization rates (on a weighted-average basis) of the offshore platforms were approximately 16.9%, 17.5% and 18.9% during the years ended December 31, 2014, 2013 and 2012, respectively.

The following information describes each of the Enterprise Offshore Business’s principal Gulf of Mexico offshore hub platforms. The Enterprise Offshore Business operates these platforms with the exception of the Independence Hub and Marco Polo platforms.

Seasonality

The Enterprise Offshore Business operations exhibit little to no effects of seasonality; however, they may be affected by weather events such as hurricanes and tropical storms in the Gulf of Mexico, which generally arise during the summer and fall months.

Competition

Within their respective market areas, the offshore pipelines compete with other offshore pipelines primarily on the basis of fees charged, available throughput capacity, connections to downstream markets and proximity and access to existing reserves.

ENTERPRISE OFFSHORE BUSINESS SELECTED FINANCIAL DATA

The selected historical financial data for the Enterprise Offshore Business were derived from the Enterprise Offshore Business’ historical financial statements and the related notes included elsewhere in this prospectus supplement. The selected historical financial data do not purport to project the Enterprise Offshore Business’ results of operations or financial position for any future period or as of any date and are not necessarily indicative of financial results to be achieved in future periods. You should read the selected financial data below together with “Enterprise Offshore Business Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the Enterprise Offshore Business’ historical consolidated financial statements and related notes included elsewhere in this prospectus supplement.

The historical consolidated financial data as of December 31, 2014 and 2013 and for the fiscal years ended December 31, 2014, 2013 and 2012 have been audited. The historical consolidated financial statements as of March 31, 2015 and for the three months ended March 31, 2015 and 2014 are unaudited. The Enterprise Offshore Business believes that all material adjustments that consist only of normal recurring adjustments necessary for the fair presentation of its interim results have been included. Results of operations for any interim period are not necessarily indicative of the results of operations for the Enterprise Offshore Business’ entire fiscal year.

ENTERPRISE OFFSHORE BUSINESS

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

Overview of Business

The Enterprise Offshore Business serves some of the most active drilling and development regions, including deepwater production fields, in the northern Gulf of Mexico offshore Texas, Louisiana, Mississippi and Alabama. The Enterprise Offshore Business includes approximately 2,350 miles of offshore natural gas and crude oil pipelines and six offshore hub platforms.

Outlook for 2015

The Enterprise Offshore Business expects that transportation volumes on its offshore crude oil pipelines will continue to increase in the near term as significant deepwater prospects begin production. For example, the SEKCO Oil Pipeline, which serves the Lucius field located in the southern Keathley Canyon area of the deepwater central Gulf of Mexico, commenced operations during the first quarter of 2015. Conversely, the Enterprise Offshore Business expects that throughput volumes on its offshore Gulf of Mexico natural gas pipelines will continue to decline in 2015 due to producers focusing more of their near-term resources to exploit offshore crude oil developments and onshore NGL-rich natural gas and crude oil producing areas; however, increases in natural gas production associated with oil production are expected to temper the overall decline in Gulf of Mexico natural gas production. Development of hydrocarbon reserves in the Gulf of Mexico is capital intensive and projects typically have long lead times. At this time, the Enterprise Offshore Business is uncertain what, if any, effect the current environment of lower hydrocarbon prices will have on producers’ intermediate plans to explore and develop reserves in the Gulf of Mexico.

Three Months Ended March 31, 2015 compared to Three Months Ended March 31, 2014

Results of Operations

The following table summarizes the key components of our results of operations for the three months indicated (dollars in millions):

Management of the Enterprise Offshore Business evaluates the performance of the Enterprise Offshore Business based on the non-GAAP financial measure of gross operating margin. For additional information regarding use of this non-GAAP financial measure, please read “—Use of Non-GAAP Financial Measure.” The following table presents gross operating margin and selected volumetric data for the periods indicated (dollars in millions, volumes as noted):

Comparison of 2015 with 2014

Gross operating margin for the first quarter of 2015 increased $5.4 million when compared to the first quarter of 2014. Gross operating margin for the first quarter of 2015 includes $8.1 million of equity earnings from the Enterprise Offshore Business’ investment in the SEKCO Oil Pipeline, which started earning firm capacity reservation fees in the third quarter of 2014. Aggregate gross operating margin from the Independence Hub platform and Independence Trail pipeline decreased $2.8 million quarter-to-quarter primarily due to lower platform processing and pipeline transportation volumes during the first quarter of 2015.

Years Ended December 31, 2014, December 31, 2013, and December 31, 2012

Results of Operations

The following table summarizes the key components of Enterprise’s Offshore Business results of operations for the years indicated (dollars in millions):

The following table presents gross operating margin and selected volumetric data for the years indicated (dollars in millions, volumes as noted):

Year Ended December 31, 2014 compared with Year Ended December 31, 2013

Gross operating margin for 2014 increased $14.8 million when compared to 2013. Gross operating margin for 2014 includes $15.5 million of equity earnings from the Enterprise Offshore Business’ investment in the SEKCO Oil Pipeline, which started earning firm capacity reservation fees in the third quarter of 2014. Equity earnings from the investment in the Cameron Highway Oil Pipeline increased $5.1 million year-to-year primarily due to a 21 MBPD increase (net to our interest) in crude oil transportation volumes. Equity earnings from the investment in Neptune Pipeline Company, L.L.C. (“Neptune”) increased $4.2 million year-to-year primarily due to its 2013 results including a $4.8 million non-cash impairment charge. Lastly, in the aggregate, gross operating margin from the Independence Hub platform and Independence Trail pipeline decreased $15.8 million year-to-year primarily due to lower platform processing and pipeline throughput volumes during 2014. Natural gas processing volumes on the Independence Hub platform decreased 70 MMcf/d year-to-year (net to our interest) and natural gas transportation volumes on the Independence Trail pipeline decreased 81 BBtus/d year-to-year.

Due to the high cost of third party windstorm insurance coverage for the offshore Gulf of Mexico assets, the Enterprise Offshore Business has self-insured these operations since June 2012.

Year Ended December 31, 2013 compared with Year Ended December 31, 2012

Gross operating margin for 2013 decreased $29.3 million when compared to 2012. In the aggregate, gross operating margin from the Independence Hub platform and Independence Trail pipeline decreased $24.7 million year-to-year primarily due to the expiration of contractual platform demand fees during the first quarter of 2012, which accounted for $9.7 million of the decrease, and lower platform processing and pipeline throughput volumes during 2013, which accounted for $16.0 million of the decrease. Natural gas processing volumes on the Independence Hub platform decreased 88 MMcf/d year-to-year (71 MMcf/d net to our interest) and natural gas transportation volumes on the Independence Trail pipeline decreased 73 BBtus/d year-to-year. Gross operating margin from the High Island Offshore System (“HIOS”) decreased $3.4 million year-to-year primarily due to a 37 BBtus/d decrease in natural gas transportation volumes. Equity earnings from our investment in Neptune include a $4.8 million non-cash impairment charge recorded in 2013.

Collectively, gross operating margin from the Shenzi and Constitution Oil Pipelines decreased $7.4 million year-to-year. These pipelines experienced a combined 13 MBPD decrease in throughput volumes primarily due to production declines. Equity earnings from the investment in the Cameron Highway Oil Pipeline increased $7.8 million year-to-year primarily due to a 22 MBPD increase (net to the Enterprise Offshore Business’ interest) in crude oil transportation volumes.

Due to the high cost of third party windstorm insurance coverage for the offshore Gulf of Mexico assets, the Enterprise Offshore Business has self-insured these operations since June 2012. As a result, insurance expense in 2013 decreased $6.5 million when compared to 2012.

Use of Non-GAAP Financial Measure

Management of the Enterprise Offshore Business evaluates the performance of the Enterprise Offshore Business based on the non-GAAP financial measure of gross operating margin. Gross operating margin is an important performance measure of the core profitability of the Enterprise Offshore Business’ operations and forms the basis of the Enterprise Offshore Business’ internal financial reporting. Management of the Enterprise Offshore Business believes that investors benefit from having access to the same financial measures that management uses in evaluating results. The GAAP financial measure most directly comparable to total segment gross operating margin is net income.

The following table presents a reconciliation of non-GAAP total gross operating margin to GAAP net income for the periods indicated (dollars in millions):