Table of contents：
Hazards of sand containing wells and limitations of traditional sand control
Four layer sand proof design of API 11AX Rod Pump
Tieling Dongsheng API 11AX Rod Pump Service Guarantee
Reference materials
In the process of oil extraction, the extraction of sand-containing wells has always been a difficult problem in the industry.When sand enters the interior of the oil pump, it will cause wear and tear, plunger stagnation and other failures. According to the journal "Petroleum Machinery", the average life span of the oil pump in sand-containing wells is more than 40% shorter than that of conventional wells.As a company focused on oil extraction equipment, Tieling Dongsheng has developed the API 11ax Rod Pump in accordance with the API 11AX standard to address this pain point, which provides a solution to the sand control problem.
Hazards of sand-containing wells and limitations of traditional sand control:
The sand output from the oil well is caused by factors such as changes in formation pressure and loose rock cementation. After the sand enters the oil pump with the crude oil, it will cause continuous wear and tear on key components. Due to the lack of professional sand-proof design of conventional oil pumps, the following problems often occur: The sealing failure of the valve ball and the valve seat, the gap between the plunger and the pump cylinder increases, and the fatigue fracture of the sucker Rod.
Sinopec Oilfield Services Co., Ltd. pointed out in the "Oil and Gas Field Ground Engineering" that the average pump inspection cycle of sand-containing wells is only 90 days, which seriously affects the mining efficiency. Traditional anti-sand measures such as filter filtration can easily cause the displacement to decrease due to clogging of sand particles, and simply increasing the hardness of the material cannot solve the fundamental problem of sand particles entering the pump body.
Four layers sand proof design of API 11AX Rod Pump:
Tieling Dongsheng's API 11AX Rod Pump strictly follows the API 11AX standard and builds an all-round sand control system through four new designs.：
1. The hierarchical filtration system has a dual filtration structure at the oil inlet. The primary filter is made of 120 mesh stainless steel to intercept large-particle sand particles, and the secondary wedge-shaped filter filters fine sand particles through a 0.2mm gap. At the same time, a backwash channel is designed to automatically clean the filter using pressure changes during oil pumping to avoid clogging.
2. The inner wall of the pump cylinder of the hydRodynamic sand control channel API 11AX Rod Pump adopts a special taper design, combined with a spiral diversion groove, so that the crude oil entering the pump body forms a swirl, and centrifugal force is used to throw the sand particles to the outside of the channel, reducing contact with the plunger.
3. The wear-resistant sealing assembly Verne ball is made of 9Cr18Mo stainless steel and ultra-fine grinding. The Verne seat is made of tungsten carbide composite material, which is combined with the unique spherical sealing structure of API 11AX Rod Pump. Even if trace amounts of sand particles enter, it can maintain good sealing performance.Data from Tieling Dongsheng Laboratory show that the wear-resistant life of this component is 3 times that of conventional pRoducts.
4. The sand discharge channel is designed with an inclined sand discharge port at the bottom of the pump cylinder. When the pump goes down, the pressure in the pump rises, and the deposited sand particles can be discharged into the pump body through a special channel to avoid the accumulation of sand particles.This design has obtained a national utility model patent.
Tieling Dongsheng API 11AX Rod Pump Service Guarantee:
As an API certified company, Tieling Dongsheng provides full life cycle services for each API 11AX Rod Pump, including: customized sand control plan according to the sand content of the oil well, online installation guidance, regular performance testing, etc.
Facing the problem of mining sand-bearing wells, choosing professional sand control equipment is the key.
Tieling Dongsheng API 11AX Rod Pump uses standard design, innovative technology and empirical results to provide petroleum companies with reliable sand control solutions to help improve mining efficiency and economic benefits.
Reference materials：
[1] Sinopec Oilfield Service Co., Ltd. in "Oil and Gas Field Ground Engineering"
[2] Daqing Oilfield Co., Ltd. in "Oil Drilling Technology"