A left-handed oil extraction downhole screw pump oil production system
By eliminating the tubing anchor and compensator through the left-hand rotary downhole screw pump system, the risk of tubing thread stripping in all-metal screw pumps is resolved, realizing an unrestrained oil pumping string structure, reducing costs and the probability of accidents, extending equipment life, and providing intelligent oil production functions.
CN224413598UActive Publication Date: 2026-06-26WUXI SHILIAN FENGHE PETROCHEMICAL EQUIP TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI SHILIAN FENGHE PETROCHEMICAL EQUIP TECH CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
Existing all-metal screw pumps pose a risk of tubing thread stripping in continuously pumping steam wells, leading to increased operating costs, reduced production and labor intensity, and the inability to install tubing anchors.
Method used
A left-handed downhole screw pump system is adopted, which connects the stator and rotor by rotating counterclockwise, eliminating the need for tubing anchors and compensators. The sucker rod and tubing are connected by left-handed threads, achieving an unconstrained sucker string structure.
Benefits of technology
It simplifies the pipe string connection structure, reduces equipment and operating costs, decreases the probability of downhole accidents, extends equipment life, and enables intelligent oil production and remote control.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224413598U_ABST
Abstract
The utility model belongs to all metal screw rod pump technical field, concretely relates to a left -hand thread formula petroleum exploitation downhole screw rod pump oil production system, include: ground equipment and downhole equipment, ground equipment includes: combination polished rod clamp and pumping polished rod, ground driving arrangement, hydraulic lifting support, wellhead device and, combination control cabinet and casing head, downhole equipment is composed of pumping string and plug -in pumping rod column, include: casing, oil pipe, plug -in pumping rod, sand control floating valve, downhole left -hand thread formula screw rod pump, rotor limiter and sand control screen pipe, the utility model is a kind of left -hand thread formula fixed, rotor's all types of screw rod pump, and the other component structures of whole system equipment are further optimized simultaneously, by this design, all the oil well of installing screw rod pump does not need to install oil pipe anchor, to further simplify the whole string installation structure and measure operation step, reduce operating cost, reduce the labor intensity of field operating personnel.
Need to check novelty before this filing date? Find Prior Art