The overall ratings of 16 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) slips from a C to a D this week. 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.

Slipping from a D to a F rating, Hess Corporation (HES) takes a hit this week. Hess Corporation discovers, develops, manufactures, and markets companion animal health products, primarily for dogs, cats, and horses. 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 HES stock.

This week, Sunoco LP (SUN) drops from a C to a D rating. Sunoco LP is a petroleum refiner and marketer, as well as a manufacturer of chemicals. The company also gets F’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of SUN stock.

Interoil Corporation (IOC) gets weaker ratings this week as last week’s C drops to a D. Interoil Corporation is an integrated oil and gas company. 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 IOC stock.

This week, Canadian Natural Resources Limited’s (CNQ) rating worsens to a D from the company’s C rating a week ago. Canadian Natural Resources Limited is an independent energy company that acquires, explores, develops, produces, markets, and sells crude oil, NGLs, and natural gas production. The company also gets F’s in sales growth, operating margin growth, earnings growth, earnings revisions, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of CNQ stock.

Statoil ASA Sponsored ADR (STO) declines this week from a C to a D. Statoil ASA Sponsored ADR is involved in the development, production, transportation and marketing of crude oil, natural gas and extract natural gas liquids. The company also gets F’s in sales growth, operating margin growth, earnings revisions, earnings surprise, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of STO stock.

Memorial Resource Development Corp’s (MRD) rating weakens this week, dropping to a D versus last week’s C. The company also gets F’s in sales growth, earnings surprise, and free cash flow. For more information, get Portfolio Grader’s complete analysis of MRD stock.

This is a rough week for Rice Energy Inc. (RICE). The company’s rating falls to D from the previous week’s C. The company also gets F’s in earnings revisions and free cash flow. For more information, get Portfolio Grader’s complete analysis of RICE stock.

Energy Transfer Equity, L.P. (ETE) experiences a ratings drop this week, going from last week’s D to a F. Energy Transfer Equity, L.P. provides diversified energy-related services in the United States and sells natural gas to electric utilities, independent power plants, local distribution companies, industrial end-users, and other marketing companies. The company also gets F’s in sales growth, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of ETE stock.

Laredo Petroleum, Inc. (LPI) earns a D this week, moving down from last week’s grade of C. Laredo Petroleum, Inc. is an independent energy company which engages in exploration, development and acquisition of oil and natural gas properties in the Permian and Mid-Continent regions of the United States. 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 LPI stock.

San Juan Basin Royalty Trust (SJT) is having a tough week. The company’s rating falls from a D to a F. San Juan Basin Royalty Trust is an express trust that holds royalty interests in properties in northwestern New Mexico. The company also gets F’s in sales growth and earnings momentum. For more information, get Portfolio Grader’s complete analysis of SJT stock.

Pacific Ethanol Inc’s (PEIX) rating weakens this week, dropping to a F versus last week’s D. Pacific Ethanol Inc produces and markets low-carbon ethanol. The company also gets F’s in operating margin growth, earnings growth, earnings revisions, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of PEIX stock.

Sanchez Energy Corporation (SN) gets weaker ratings this week as last week’s D drops to a F. 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 sales growth, operating margin growth, earnings growth, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of SN stock.

This week, Aemetis, Inc. (AMTX) drops from a C to a D rating. 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 AMTX stock.

This is a rough week for W&T; Offshore, Inc. (WTI). The company’s rating falls to F from the previous week’s D. 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.

Comstock Resources, Inc. (CRK) declines this week from a C to a D. Comstock Resources, Inc. is an independent energy company that acquires, explores, develops, and produces oil and natural gas in the United States. The company also gets F’s in sales growth, earnings surprise, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CRK 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.