Sucker Rod Pump

Objectives/Scope:  A new methodology for automatic iteration on viscous damping enhanced with state-of-the-art pump fillage, fluid load lines and valve openings and closing calculation is presented. Field results showing the impact of the methodology in diagnosing downhole conditions, improving inferred production, fluid level, pump intake and horsepower calculations are shown.

Methods...

Rod lift applications in deep unconventional wells have created a wide range of new challenges for all components of the RL system. In the case of the sucker rod, the increased compressive loads, especially in the deeper tapers, combined with the deviation of the wells result in very high contact forces between rod and tubing as well as effective stresses on the rods that range from very high to...

Solids in rod pumped wells are a significant cause of failures and higher operating costs. Most solids cause continuing abrasion problems that are commonly misdiagnosed in typical failure analysis programs. This paper investigates the sources and nature of these solids, the impact on failures and technologies to reduce the adverse impacts of solids on equipment. These technologies will include a...

Sucker rod pumping commonly requires the tubing string to be secured to the casing downhole near the pump to prevent tubing movement. Tubing movement can undesirably reduce downhole pump efficiency and/or damage the tubing and casing. Downhole tubing anchors are used for this purpose, but they can bring about risks that can increase operating expense and limit production. For example, production...

Sucker rods are an essential component for rod pumping or rod lifting of oil and gas wells, but they have been limited by the use of metals and thermoset based non-metal composites (i.e., existing fiberglass sucker rods). Steel (metal) sucker rods have been limited by a low corrosion resistance, a low strength to weight ratio (i.e., too heavy), a low fatigue endurance limit and a relatively poor...

Pumping chemicals on wells with high fluid levels has always been a struggle on its efficiency as well as to reach the bottom of the well. This paper will go over the details of the downhole chemical technology to deliver chemical chemicals by microencapulating the chemical components into a chemical screen that is placed at the bottom of the tubing. This technology was installed in Gaines County...

Modern controllers are required to estimate various parameters from field data to provide effective diagnostics and control of sucker rod pumping installations. In some cases, however, the data are not only corrupted by noise but also contain outliers that are in gross disagreement with the postulated model. If included, outliers can distort the fitting process so dramatically that the fitted...

The ability to have host software autonomously optimize control artificially lifted oil and gas wells has obvious upsides for operators looking for productivity gains both for their workforce and their assets. In recent years, many strides have been made to develop such algorithms to allow operators to maximize performance on their artificially lifted assets. One of the most significant challenges...

Effectively managing fluid production with high sand content poses a common challenge in various forms of artificial lift, whether it be addressing formation fines or handling proppant flowback from hydraulically fractured zones. This challenge is particularly pronounced in reciprocating rod lift applications, where the entry of sand and solids into the barrel/plunger interface emerges as a...

The use of rod rotators is key to extend the life of sucker rod string couplings in all intentionally and not intentionally deviated wells. Its applicability has proved to be a low-cost solution, giving an even wear on sucker rod couplings, extending considerably their run time. One of the major issues with conventional cable actuated rod rotators is the integrity of the cable, its installation...