Downhole Pump and Parts

I. Tubing Pump

Tubing pumps can be sunk into wells in sequence as follows: barrel is run down to the setting depth on the tubing and then plunger with the standing valve on the rod string. For tubing of same diameter, tubing pumps are always of larger capacity than insert pumps. The tubing pump is simple in structure and applicable for wells not too deep and of higher production rate.

Tubing pumps are classified as THM and THC pumps.The standing valve of THC or THM pump can be hold and sealed by a mechanical or cup hold-down. Plunger together with standing valve can be lifted out integrallyfor normal pump check, with the tubing remain intact. This makes the tubing pumps suitable for wells usuallywith short pump check intervals.

Tubing Pumps Specifications:

II. Insert Pump

Insert pumps can be connected to sucker rod on the surface and then lowered into the wells integrally through the tubing. Pump checks are easy and without the need of pulling and running the tubing. This makes it especially suitable for deep well applications. Reduced running time and make-and-breaks can surely enhance tubing working life. Insert pumps are clarified as mechanical and cup hold-down pumps by hold-down types or as top hold-down, bottom hold-down and traveling barrel insert pumps by hold-down positions.

Insert Pumps Specifications：

III. Oversized Pump(OTP, Large Size Pump)

The outer diameter of the plunger of large size pump(oversized pump) is larger than the inner hole of the tubing. It is used for a given casing size well.

Benefits and Features:

1. In a given casing size well, a large diameter pump can be operated to increase the production of the well; 
2. Selecting best fittings materials;
3. Various heat treatment processes and surface treatment processes being applied to meet the requirements of well conditions for product strength, corrosion resistance and wear resistance. 

Product specification:

IV. THM Tubing Pump Parts

V. THC Tubing Pump Parts