Sucker Rod Pump

Case Study Results on Overcoming Massive Gas Interference from SRP Well Drawdown in Permian Basin

As operators draw down a well, massive quantities of gas are released into the wellbore which results in shut-downs and lost production. Using appropriate bottom hole assembly (BHA) best practices can help the operator pump through these gas slugs to maximize production and return on investment. Additionally, solid separation is an ongoing issue. Using a gas separator minimizes abrasion and corrosion related failures, keeping operating expenses lower.

Automatic Iteration on Viscous Damping for Optimal SRP Well Control

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.

Sinker Section Design to Reduce Buckling Related Failures

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 negative values.

Handling of Solids in Rod Pumped Wells

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 better understanding of existing products as well as emerging technologies. 

A Tubing Anchor Engineered to Maximize Production from Horizontal Wells

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.

Fiber Reinforced Thermoplastic Sucker Rods for Improving Rod Pumping

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 environmental, social and governance (ESG) rating during its lifecycle.

Downhole Chemical Treatment on Rod Pumps

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 after repeated failures on tubing due to severe scale and made a drastic improvement on the run time and production; decreased the failure rate down to nil

The Search for Reliability in Constrained Systems: A Scientific Study of Lightweight Rod Strings

Operators and Production Engineers are always on the search for optimized designs. The goal across the industry is to increase reliability, increase production, and reduce workover expenses and down-time. There are times, however, where the surface equipment becomes a bottleneck and limitation to the ideal string design, forcing lightweighting. This can be done multiple ways, most often through the use of fiberglass sucker rods (lower density of the large rod body = reduced weight on the system), and/or 3/4" steel sucker rods (smaller diameter = reduced weight on the system).

Robust Parameter Estimation in Rod Pump Systems

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 parameters become arbitrary. 

Annual Conference Info

NEXT CONFERENCE: APRIL 15-18, 2024