The grades of 13 Oil Gas & Consumable Fuels stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

This week, TC PipeLines, LP (TCP) pushes up from a C to a B rating. TC PipeLines, LP acquires, owns and participates in the management of energy infrastructure businesses in North America. The company also gets A’s in earnings momentum and return on equity. For more information, get Portfolio Grader’s complete analysis of TCP stock.

Antero Resources Corporation (AR) shows solid improvement this week. The company’s rating rises from a C to a B. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of AR stock.

The rating of Alliance Resource Partners, L.P. (ARLP) moves up this week, rising from a C to a B. Alliance Resource Partners, L.P. produces and markets coal, primarily to major United States utilities and industrial users. The company also gets A’s in earnings revisions, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of ARLP stock.

Hoegh LNG Partners LP (HMLP) is seeing ratings go up from a C last week to a B this week. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of HMLP stock.

This week, Dorchester Minerals, L.P.’s (DMLP) ratings are up from a C last week to a B. 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 A’s in earnings growth, earnings momentum, and return on equity. For more information, get Portfolio Grader’s complete analysis of DMLP stock.

GasLog Ltd. (GLOG) improves from a C to a B rating this week. GasLog Ltd. operates and manages liquefied natural gas (LNG) carriers. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of GLOG stock.

This is a strong week for Emerge Energy Services LP (EMES). The company’s rating climbs to B from the previous week’s C. For more information, get Portfolio Grader’s complete analysis of EMES stock.

Encana Corporation (ECA) earns a B this week, jumping up from last week’s grade of C. Encana Corporation provides energy transportation, distribution, and related services in North America and internationally. The company also gets A’s in earnings revisions and earnings momentum. For more information, get Portfolio Grader’s complete analysis of ECA stock.

Hallador Energy Company’s (HNRG) ratings are looking better this week, moving up to a B from last week’s C. Hallador Energy Company processes, mines and sells coal to producers of electric power. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of HNRG stock.

Advantage Oil & Gas Ltd. (AAV) boosts its rating from a C to a B this week. Advantage Oil & Gas Ltd. is actively engaged in the business of oil and gas exploitation, development, acquisition and production. For more information, get Portfolio Grader’s complete analysis of AAV stock.

Evolution Petroleum Corporation (EPM) gets a higher grade this week, advancing from a C last week to a B. Evolution Petroleum Corporation explores for and produces oil and gas. The company also gets A’s in operating margin growth, earnings growth, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of EPM stock.

This week, GeoPark Ltd’s (GPRK) ratings are up from a C last week to a B. The company also gets A’s in earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of GPRK stock.

Approach Resources Inc.’s (AREX) ratings are looking better this week, moving up to a B from last week’s C. Approach Resources Inc. focuses on natural gas and oil reserves in tight sands and shale. The company also gets A’s in earnings revisions and earnings momentum. For more information, get Portfolio Grader’s complete analysis of AREX 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.