The ratings of 17 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”).

BP Prudhoe Bay Royalty Trust (BPT) declines this week from a D to a F. BP Prudhoe Bay Royalty Trust holds overriding royalty interests constituting a non-operational interest in minerals in the Prudhoe Bay oil field located on the North Slope in Alaska. The company also gets F’s in sales growth and earnings growth. For more information, get Portfolio Grader’s complete analysis of BPT stock.

This is a rough week for Spectra Energy Partners, LP (SEP). The company’s rating falls to D from the previous week’s C. 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.

Slipping from a C to a D rating, Genesis Energy, L.P. (GEL) takes a hit this week. Genesis Energy, L.P. is involved in the oil and gas industry in the Gulf Coast region of the United States. 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 GEL stock.

Vermilion Energy Inc.’s (VET) rating weakens this week, dropping to a F versus last week’s D. Vermilion Energy Inc. exploits, acquires, develops, and produces oil and natural gas in Australia, Canada, France, Ireland, and the Netherlands. The company also gets F’s in sales growth, operating margin growth, earnings growth, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of VET stock.

This week, Gulfport Energy Corporation (GPOR) drops from a D to a F rating. 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 momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of GPOR stock.

Energy Transfer Equity, L.P. (ETE) slips from a C to a D this week. 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.

VTTI Energy Partners LP (VTTI) is having a tough week. The company’s rating falls from a C to a D. The company also gets F’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of VTTI stock.

NGL Energy Partners LP (NGL) earns a F this week, moving down from last week’s grade of D. NGL Energy Partners LP owns and operates a vertically-integrated propane business. 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 NGL stock.

This week, KNOT Offshore Partners LP’s (KNOP) rating worsens to a D from the company’s C rating a week ago. The company also gets F’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of KNOP stock.

Dorchester Minerals, L.P. (DMLP) experiences a ratings drop this week, going from last week’s D to a F. Dorchester Minerals, L.P. acquires, owns, and administers producing and nonproducing natural gas and crude oil royalty, net profits, and leasehold interests in the United States. The company also gets F’s in sales growth and earnings growth. For more information, get Portfolio Grader’s complete analysis of DMLP stock.

Dynagas LNG Partners LP (DLNG) gets weaker ratings this week as last week’s C drops to a D. The company also gets F’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of DLNG stock.

Westmoreland Coal Company (WLB) declines this week from a D to a F. 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 revisions, earnings surprise, and free cash flow. For more information, get Portfolio Grader’s complete analysis of WLB stock.

This week, GasLog Ltd.’s (GLOG) rating worsens to a F from the company’s D rating a week ago. GasLog Ltd. operates and manages liquefied natural gas (LNG) carriers. The company also gets F’s in earnings revisions, earnings surprise, and free cash flow. For more information, get Portfolio Grader’s complete analysis of GLOG stock.

Renewable Energy Group, Inc. (REGI) experiences a ratings drop this week, going from last week’s C to a D. Renewable Energy Group, Inc. engages in the production, marketing and distribution of biodiesel and its co-products in the United States. The company also gets F’s in operating margin growth, earnings growth, and earnings revisions. For more information, get Portfolio Grader’s complete analysis of REGI stock.

This is a rough week for Capital Product Partners LP (CPLP). The company’s rating falls to D from the previous week’s C. Capital Product Partners LP charters its vessels to be engaged in the seaborne transportation services of crude oil and refined petroleum products, edible oils, and soft chemicals. The company also gets F’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of CPLP stock.

Sandridge Permian Trust (PER) gets weaker ratings this week as last week’s C drops to a D. Sandridge Permian Trust acquires and holds royalty interests in oil and natural gas properties in the Permian Basin in Andrews County, Texas. For more information, get Portfolio Grader’s complete analysis of PER stock.

SandRidge Mississippian Trust II (SDR) earns a D this week, moving down from last week’s grade of C. 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.

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.