The ratings of 28 Oil Gas & Consumable Fuels stocks are down this week, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, CNOOC Limited Sponsored ADR’s (CEO) rating worsens to a D from the company’s C rating a week ago. CNOOC Limited Sponsored ADR is an oil and gas company engaged in the exploration, development, and production of crude oil and natural gas. The company also gets F’s in sales growth, operating margin growth, earnings growth, and earnings revisions. For more information, get Portfolio Grader’s complete analysis of CEO stock.

Slipping from a C to a D rating, Phillips 66 Partners LP (PSXP) takes a hit this week. For more information, get Portfolio Grader’s complete analysis of PSXP stock.

This week, Spectra Energy Partners, LP (SEP) drops from a C to a D rating. Spectra Energy Partners, LP gathers and transports natural gas through interstate pipeline systems. For more information, get Portfolio Grader’s complete analysis of SEP stock.

Valero Energy Partners LP (VLP) slips from a C to a D this week. For more information, get Portfolio Grader’s complete analysis of VLP stock.

This is a rough week for Enbridge Inc. (ENB). The company’s rating falls to D from the previous week’s C. Enbridge Inc. is in the business of transportation and distribution of crude oil and natural gas primarily in Canada and the United States. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of ENB stock.

Energy Transfer Partners, L.P.’s (ETP) rating weakens this week, dropping to a D versus last week’s C. Energy Transfer Partners, L.P. is involved in natural gas processing, transportation and marketing operations, and sells propane and propane-related products and services to residential, commercial, industrial and agricultural customers. The company also gets F’s in sales growth, earnings growth, and free cash flow. For more information, get Portfolio Grader’s complete analysis of ETP stock.

Williams Partners, L.P. (WPZ) is having a tough week. The company’s rating falls from a C to a D. Williams Partners, L.P. is engaged in the business of gathering, transporting, processing and treating natural gas, as well as fractionating and storing natural gas liquids. The company also gets F’s in operating margin growth, earnings growth, earnings revisions, earnings surprise, and free cash flow. For more information, get Portfolio Grader’s complete analysis of WPZ stock.

Noble Energy, Inc. (NBL) declines this week from a C to a D. Noble Energy, Inc. is an independent company engaged in the acquisition, exploration, development, production and marketing of crude oil, natural gas, and natural gas liquids. The company also gets F’s in operating margin growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of NBL stock.

Cheniere Energy Partners, L.P. (CQP) earns a D this week, moving down from last week’s grade of C. Cheniere Energy Partners, L.P. owns and operates the Sabine Pass liquefied natural gas (LNG) terminal located in western Cameron Parish, Louisiana on the Sabine Pass Channel. The company also gets F’s in earnings revisions, earnings surprise, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CQP stock.

Enterprise Products Partners L.P. (EPD) gets weaker ratings this week as last week’s C drops to a D. Enterprise Products Partners L.P. provides processing and transportation services to producers and consumers of natural gas liquids. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of EPD stock.

EQT GP Holdings LP (EQGP) experiences a ratings drop this week, going from last week’s C to a D. For more information, get Portfolio Grader’s complete analysis of EQGP stock.

Alliance Holdings GP, L.P. (AHGP) is having a tough week. The company’s rating falls from a C to a D. Alliance Holdings GP, L.P. produces and markets coal to utilities and industrial users in the United States. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of AHGP stock.

This week, Enbridge Energy Partners, L.P. Class A’s (EEP) rating worsens to a D from the company’s C rating a week ago. Enbridge Energy Partners, L.P. Class A transports crude oil and natural gas liquids to refineries in the midwestern United States and eastern Canada. The company also gets F’s in sales growth and free cash flow. For more information, get Portfolio Grader’s complete analysis of EEP stock.

Enbridge Energy Management, L.L.C. (EEQ) slips from a C to a D this week. Enbridge Energy Management, L.L.C. manages and controls the business and affairs of Enbridge Energy Partners. The company also gets F’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of EEQ stock.

This is a rough week for Tallgrass Energy GP LP Class A (TEGP). The company’s rating falls to D from the previous week’s C. The company also gets F’s in operating margin growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of TEGP stock.

VTTI Energy Partners LP (VTTI) declines this week from a C to a D. The company also gets F’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of VTTI stock.

This week, Panhandle Oil and Gas Inc. Class A (PHX) drops from a C to a D rating. Panhandle Oil and Gas Inc. Class A explores for and develops oil and gas properties, and produces and sells oil and natural gas. The company also gets F’s in sales growth and operating margin growth. For more information, get Portfolio Grader’s complete analysis of PHX stock.

North European Oil Royalty Trust (NRT) gets weaker ratings this week as last week’s C drops to a D. North European Oil Royalty Trust is involved in gas and oil production, and it holds overriding royalty rights in certain concessions or leases in the Federal Republic of Germany. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of NRT stock.

Westmoreland Coal Company (WLB) earns a D this week, moving down from last week’s grade of C. Westmoreland Coal Company mines coal, which is used to produce electric power, and owns power-generating plants. The company also gets F’s in earnings surprise and free cash flow. For more information, get Portfolio Grader’s complete analysis of WLB stock.

Blueknight Energy Partners, L.P. (BKEP) experiences a ratings drop this week, going from last week’s C to a D. Blueknight Energy Partners, L.P. provides integrated terminalling, storage, processing, gathering, and transportation services for companies engaged in the production, distribution, and marketing of crude oil and asphalt products in the United States. The company also gets F’s in operating margin growth, earnings growth, earnings revisions, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of BKEP stock.

StealthGas Inc.’s (GASS) rating weakens this week, dropping to a F versus last week’s D. StealthGas Inc. offers marine transport services for liquefied petroleum gas producers and users. The company also gets F’s in operating margin growth, earnings revisions, earnings surprise, and free cash flow. For more information, get Portfolio Grader’s complete analysis of GASS stock.

Slipping from a C to a D rating, Northern Oil and Gas, Inc. (NOG) takes a hit this week. Northern Oil and Gas, Inc. is an independent energy company that acquires, explores, exploits and develops oil and natural gas properties. The company also gets F’s in sales growth and free cash flow. For more information, get Portfolio Grader’s complete analysis of NOG stock.

Hugoton Royalty Trust (HGT) is having a tough week. The company’s rating falls from a C to a D. Hugoton Royalty Trust owns net profit interests in natural gas producing properties located in the Hugoton area of Kansas and Oklahoma, the Anadarko Basin of Oklahoma, and the Green River Basin of Wyoming. The company also gets F’s in sales growth and earnings growth. For more information, get Portfolio Grader’s complete analysis of HGT stock.

TransGlobe Energy Corporation (TGA) earns a F this week, moving down from last week’s grade of D. TransGlobe Energy Corporation is mainly engaged in the exploration for, and the development and production of, oil and gas in Egypt and Yemen. The company also gets F’s in sales growth, earnings surprise, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of TGA stock.

This week, W&T; Offshore, Inc.’s (WTI) rating worsens to a D from the company’s C rating a week ago. W&T; Offshore, Inc. is an independent oil and natural gas producer that engages in the acquisition, exploration, and development of oil and natural gas properties primarily in the Gulf of Mexico. The company also gets F’s in sales growth and free cash flow. For more information, get Portfolio Grader’s complete analysis of WTI stock.

Slipping from a C to a D rating, Southcross Energy Partners, L.P. (SXE) takes a hit this week. The company also gets F’s in sales growth and free cash flow. For more information, get Portfolio Grader’s complete analysis of SXE stock.

This week, SandRidge Mississippian Trust II (SDR) drops from a C to a D rating. SandRidge Mississippian Trust II owns oil and natural gas wells and is based in Austin, Texas. For more information, get Portfolio Grader’s complete analysis of SDR stock.

Uranium Energy Corp. (UEC) declines this week from a C to a D. Uranium Energy Corp. is an exploration-stage company that explores and develops mineral properties in the United States and Paraguay. The company also gets F’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of UEC stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.