The overall ratings of 24 Oil Gas & Consumable Fuels stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Cimarex Energy Co. (XEC) experiences a ratings drop this week, going from last week’s C to a D. Cimarex Energy Co. explores for and produces crude oil and natural gas in the United States. The company also gets F’s in sales growth, operating margin growth, earnings growth, earnings revisions, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of XEC stock.

This week, Apache Corporation (APA) drops from a D to a F rating. Apache Corporation is an energy company that discovers, develops and produces natural gas, crude oil and natural gas liquids. The company also gets F’s in sales growth, operating margin growth, earnings revisions, earnings surprise, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of APA stock.

Devon Energy Corporation (DVN) slips from a D to a F this week. Devon Energy Corporation explores, develops, and transports oil, gas, and natural gas liquids. The company also gets F’s in sales growth, operating margin growth, earnings growth, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of DVN stock.

MarkWest Energy Partners, L.P. (MWE) earns a F this week, moving down from last week’s grade of D. MarkWest Energy Partners, L.P. gathers and processes natural gas and transports, fractionates, and stores natural gas liquids. The company also gets F’s in sales growth, operating margin growth, earnings revisions, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of MWE stock.

This is a rough week for Noble Energy, Inc. (NBL). The company’s rating falls to F from the previous week’s 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 sales growth, operating margin growth, earnings growth, earnings revisions, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of NBL stock.

Eni SpA Sponsored ADR (E) is having a tough week. The company’s rating falls from a D to a F. Eni SpA Sponsored ADR works in oil and gas exploration and production, gas marketing operations, management of gas infrastructures, power generation, petrochemicals and oil field services. The company also gets F’s in sales growth, operating margin growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of E stock.

Williams Partners, L.P.’s (WPZ) rating weakens this week, dropping to a F versus last week’s 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 earnings surprise and free cash flow. For more information, get Portfolio Grader’s complete analysis of WPZ stock.

This week, Gulfport Energy Corporation’s (GPOR) rating worsens to a F from the company’s D rating a week ago. Gulfport Energy Corporation owns and operates oil and gas properties in the Louisiana Gulf Coast area of the United States. The company also gets F’s in operating margin growth, earnings growth, earnings surprise, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of GPOR stock.

Enbridge Energy Partners, L.P. Class A (EEP) gets weaker ratings this week as last week’s D drops to a F. 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, earnings revisions, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of EEP stock.

Global Partners LP (GLP) declines this week from a D to a F. Global Partners LP owns, controls or has access to a terminal network of refined petroleum products in New England. The company also gets F’s in sales growth, earnings growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of GLP stock.

Slipping from a C to a D rating, VTTI Energy Partners LP (VTTI) takes a hit this week. The company also gets F’s in operating margin growth and earnings surprise. For more information, get Portfolio Grader’s complete analysis of VTTI stock.

This is a rough week for Ultrapar Participacoes S.A. Sponsored ADR (UGP). The company’s rating falls to D from the previous week’s C. Ultrapar Participacoes S.A. Sponsored ADR is engaged in the fuel distribution and chemical businesses in Brazil. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of UGP stock.

KNOT Offshore Partners LP (KNOP) earns a D this week, moving down from last week’s grade of C. For more information, get Portfolio Grader’s complete analysis of KNOP stock.

GasLog Ltd. (GLOG) is having a tough week. The company’s rating falls from a D to a F. GasLog Ltd. operates and manages liquefied natural gas (LNG) carriers. 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 GLOG stock.

Synergy Resources Corporation (SYRG) gets weaker ratings this week as last week’s C drops to a D. Synergy Resources Corporation is engaged in oil and gas acquisitions, exploration, development and production activities, mainly in the area known as the Denver-Julesburg Basin. The company also gets F’s in earnings growth, earnings revisions, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of SYRG stock.

Midcoast Energy Partners LP Class A (MEP) experiences a ratings drop this week, going from last week’s C to a D. The company also gets F’s in sales growth, operating margin growth, earnings growth, earnings revisions, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of MEP stock.

This week, Cobalt International Energy, Inc.’s (CIE) rating worsens to a D from the company’s C rating a week ago. Cobalt International Energy, Inc. is an independent oil-focused exploration and production company. The company also gets F’s in earnings surprise, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CIE stock.

Slipping from a D to a F rating, Westmoreland Resource Partners LP (WMLP) takes a hit this week. The company also gets F’s in sales growth, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of WMLP stock.

Sanchez Energy Corporation (SN) slips from a D to a F this week. Sanchez Energy Corporation is an independent exploration and production company focused on the exploration, acquisition and development of unconventional oil and natural gas resources. The company also gets F’s in operating margin growth, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of SN stock.

Azure Midstream Partners LP’s (AZUR) rating weakens this week, dropping to a F versus last week’s D. The company also gets F’s in earnings revisions, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of AZUR stock.

This week, W&T; Offshore, Inc. (WTI) drops from a D to a F rating. 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, operating margin growth, earnings growth, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of WTI stock.

Bellatrix Exploration Ltd. (BXE) declines this week from a D to a F. Bellatrix Exploration Ltd. explores for oil and natural gas. The company also gets F’s in sales growth, operating margin growth, earnings growth, and free cash flow. For more information, get Portfolio Grader’s complete analysis of BXE stock.

Gevo, Inc. (GEVO) slips from a C to a D this week. Gevo, Inc. operates as a technology development company for biobutanol. 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 GEVO stock.

Arch Coal, Inc. (ACI) is having a tough week. The company’s rating falls from a C to a D. Arch Coal, Inc. produces coal and sells it to power plants, steel mills, and industrial facilities. The company also gets F’s in earnings surprise, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of ACI 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.