企业动态

Progressive Cavity Pump (PCP) systems play a vital role in artificial lift, transmitting surface torque to downhole pumps via sucker rods. They offer advantages like low investment costs and compatibility with high-viscosity crude.

However, in complex wells (e.g., directional or horizontal wells), abnormal rod-tube wear (deviation wear) causes failures such as rod breaks and tubing leaks. Traditional empirical parameter adjustment faces limitations:

1. Difficulty quantifying deviation wear risk distribution across the entire well depth.

2. Inability to concurrently optimize buckling deformation and wear mitigation.

Figure 1: Rod-Tube Contact Schematic

Figure 2: Sucker Rod Equilibrium State in Tubing

To resolve these issues, HXBS leveraged its unique IntelliCPCP® mechanical components to develop RodSavior. Core technologies include:

1. Hyperbolic Dynamic Decision Mechanism: Analyzes wellbore trajectory and mechanical loads→Pinpoints high-risk wear zones→Automatically matches optimal wellhead axial force parameters. Breakthrough effect: Suppresses peak rod-tube interaction forces across the entire wellbore.

2. Critical Buckling Load Constraint Algorithm: Breakthrough effect: Prevents sucker rod "self-locking".

The hyperbolic decision mechanism comprises four modules:

(1) Module 1: Generates primary curves indicating rod-tube interaction force (reflecting friction severity) versus measured depth (MD) for various wellhead axial forces.

(2) Module 2: Identifies wear risk points (MD locations where interaction force peaks) for each axial force.

(3) Module 3: Constructs secondary curves showing interaction force magnitude versus wellhead axial force at each risk point.

(4) Module 4: Determines optimal wellhead axial force by analyzing intersections of secondary curves.

Figure 3: Primary Curve Schematic  

Figure 4: Secondary Curve Schematic

Additionally, RodSavior integrates a critical buckling load constraint algorithm. Building on the four modules, it ensures axial load on every rod segment remains below the critical buckling threshold, further refining the optimal axial force.

HXBS will advance IntelliCPCP®’s intelligent technology framework based on RodSavior, driving progress in artificial lift solutions.