China Puyang Zhongshi Group Co., Ltd. Company News

Sucker rod pumping systems are the oldest and most widely used type of artificial lifting system for oil wells. Sucker-rod pumping is the most widely used artificial lift method for onshore oil wells. Sucker-rod strings transfer the motion from the driving machine on the wellhead to the downhole oil pump.   The figure below shows a schematic of a rod pumping system.  

The sucker-rod string is the most vital part of the pumping system, since it provides the link between the surface pumping unit and the downhole pump. It's several thousand feet long and having a maximum diameter of slightly more than one inch.   The rod string is composed of individual sucker rods, connected to each other, until the required pumping depth is reached. Early pumping installations used wooden poles, usually made of hickory, which had steel end-fittings to facilitate joining of the rods. As average well depths increased and greater rod strength was required, the all-steel sucker rods appeared. These are solid steel bars with forged upset ends to accommodate male or female threads, a design that has remained unchanged.   The most important improvements in sucker-rod manufacturing methods over the years were the application of heat treating to improve corrosion resistance, better pin constructions, and the use of rolling instead of cutting for making the necessary threads.  

double layer stuffing box . The custom-made double layer stuffing box for our Indonesian customer are ready for shipment. The customer is very satisfied with the quality. New and existing customers are welcome to inquire about pricing.：The custom-made shaft seals for our Indonesian customer are ready for shipment. The customer is very satisfied with the quality. New and existing customers are welcome to inquire about pricing.      

A sucker rod is a steel rod, typically measuring between 7 and 9 metres (25 and 30 ft) in length, with threaded ends at both sides. It is used in the oil industry to connect the surface components with the downhole components of a reciprocating piston pump in an oil well. The pumpjack, which is the visible above-ground drive for the well pump, is linked to the downhole pump at the base of the well through a series of interconnected sucker rods. Sucker rods are also available in fiberglass, typically manufactured in lengths of 37 1/2 feet and diameters of 3/4, 7/8, 1, and 1 1/4 inch. These rods feature metallic threaded ends, female on one side and male on the other. The surface unit transfers energy from the prime-mover to the sucker rod string to facilitate well pumping. It achieves this by converting the rotary motion of the prime-mover into the reciprocating motion required by the sucker rod and reducing the prime-mover's speed to a suitable pumping rate. Speed reduction is managed through a gear reducer, while the rotary motion of the crankshaft is transformed into oscillatory motion using a walking beam. The crank arm connects to the walking beam via a pitman arm. The walking beam is supported by a Samson post and saddle bearing. The horse head and bridle ensure vertical pull on the sucker rod string at all times, preventing bearing movement above the stuffing box. A combination of the polished rod and stuffing box is employed to maintain an effective liquid seal at the surface.    

A sucker rod is a steel rod, typically measuring between 7 and 9 metres (25 and 30 ft) in length, with threaded ends at both sides. It is used in the oil industry to connect the surface components with the downhole components of a reciprocating piston pump in an oil well. The pumpjack, which is the visible above-ground drive for the well pump, is linked to the downhole pump at the base of the well through a series of interconnected sucker rods. Sucker rods are also available in fiberglass, typically manufactured in lengths of 37 1/2 feet and diameters of 3/4, 7/8, 1, and 1 1/4 inch. These rods feature metallic threaded ends, female on one side and male on the other. The surface unit transfers energy from the prime-mover to the sucker rod string to facilitate well pumping. It achieves this by converting the rotary motion of the prime-mover into the reciprocating motion required by the sucker rod and reducing the prime-mover's speed to a suitable pumping rate. Speed reduction is managed through a gear reducer, while the rotary motion of the crankshaft is transformed into oscillatory motion using a walking beam. The crank arm connects to the walking beam via a pitman arm. The walking beam is supported by a Samson post and saddle bearing. The horse head and bridle ensure vertical pull on the sucker rod string at all times, preventing bearing movement above the stuffing box. A combination of the polished rod and stuffing box is employed to maintain an effective liquid seal at the surface.    

Drill Pipe Thread Protectors PIN & BOX   Our heavy duty steel thread protectors are beautifully shaped, rigid and easy to install and remove. Heavy duty steel drill pipe thread protector is made of Pressed Steel PSTP Steel material used for protecting the connection thread of drill pipe, drill collars, drill heads and other drilling tools.We have professional quality inspectors to inspect the finished products. in order to ensure the impact strength, external force crack resistance and temperature resistance of the thread protector.     One end Another end Size Thread type Size Thread type 2-3/8 EUE, NUE, TOP EUE, NUE, TOP 2-3/8 EUE, NUE, NEW box EUE, NUE, NEW pin 2-7/8 2-7/8 3-1/2 3-1/2 4 4 4-1/2 4-1/2     1,Wooden box package or wooden pallet for cargo which quantity less than one 20FT/40FT container.   2. Group packing with Anti-collision foam for cargo which quantity more than 20FT/40FT container   3. According to customer' requirements   PUYANG ZHONGSHI GROUP CO.,LTD manufactures and supplies a wide range of thread protectors from 2-3/8"to 13-3/8" according to API 5CT standard,oversized thread protectors and special requirements can also be offered,our thread protectors are specially designed to protect the pipe thread and ends during normal handling or transportation,there are multiple types such as plastic thread protectors,composite thread protectors,pressed steel thread protectors and cast steel thread protectors.    

1. Introduction of sucker rod centralizer The sucker rod centralizers are used to protect sucker rod to reduce wearing. 2. Material 2.1. Plastic: UHMWPE (Ultra High Molecular Weight Polyethylene) 2.2. Rubber: Nitrile 2.3. Nylon: Nylon 6/6 2.4.. 42CrMo 3. Structure 3.1. Pure plastic 3.2. Steel frame, rubber inside and outside 3.3. Nylon6/6 roller and alloy steel body   4. Specification

Subsurface sucker tubing pump is applied to pumping crude oil from oil well with pumping unit and sucker rod. Through sucker rod，tubing pump is descent to certain depth of oil. When pumping unit drives sucker rod to move up and down, sucker rod drives plunger of subsurface sucker rod pump move up and down in tubing barrel and pump crude to surface. Pump barrel, plunger and accessories are specially treated which have the advantages of abrasive and corrosion resistance. It is suitable for pumping oil from oil well which contains sand, wax, gas and water. Main technical parameters Dia (mm) Stroke length (m) Pump barrel length (m) Plunger length (mm) Tubing size (in) 44 0.6-8 3.3-9.5 0.6-6.9 2 3/8 57 0.6-6 3.3-8 0.6-5.4 2 7/8 70 0.6-6 3.3-8 0.6-5.4 3 1/2 95 0.6-6 3.3-8 0.6-5.4 4 1/2   Structure and feature 1. Tubing pump is mainly composed by pump barrel, plunger, travelling valve, standing valve, etc. Simple structure and easy operation is main feature of rod pump. Main accessories Pump barrel assembly: the body of pump barrel is made of high-quality carbon steel, and inner core is adopted rotary type and high-strength chrome-plated technology, Surface roughness less than 0.4, abrasion and corrosion resistant and long working life. Plunger: the plunger is made of high-quality carbon steel, and the surface is chrome-plated or metal-sprayed which are abrasion resistance and corrosion resistance. According to customer’s requirement, we can manufacture plunger with sand trap and any length of plunger. Accessories: up and down travelling valve assembly and standing valve assembly are made by high-quality carbon steel. Valve ball 9Cr18Mo, valve seat 6Cr18Mo (or high-strength carbolic metal) the material has the quality of high-

Sucker rod couplings are essential components used in rod-pumped applications to connect sucker rods, polished rods, and sinker bars. These couplings are typically made from high-quality alloy steel or carbon steel carbon steel and conform to API 11B standard, which is divided into two main types of couplings: full-size couplings and slim-hole couplings,These couplings ensure secure and durable connections, critical for efficient oil extraction processes.   Sucker rod couplings type based on the surface process: T couplings, SM couplings   Sucker rod coupling specification table:  

Puyang Zhongshi Group manufacture OCTG accessories, such as tubing couplings, casing couplings and X-overs. with the steel grades J55,K55,N80,L80, L80-13Cr and P110 etc. API 5CT couplings and crossovers are the important accessories for tubing and casing pipes. We have obtained ISO 9001 quality control certificates, API 5CT certificate with the NO. API 5CT-1415 for years, supply large quantity OCTG accessories every year.