China Puyang Zhongshi Group Co., Ltd. Company News

Characteristics of casing head The casing connection can be either threaded or slip-connected, and hanging the casing is fast and convenient; The casing hanger adopts a rigid and rubber composite sealing structure, and a metal seal can also be used to enhance the sealing performance of the product; It is designed with a wear-proof sleeve and a pressure test removal tool to facilitate the removal of the wear-proof sleeve and the pressure test of the casing head; The upper flange is designed with pressure testing and secondary grease injection devices; The valve configuration on the side of the casing head is designed according to user needs;   The function of casing head The casing head is installed at the upper end of the surface casing string. It is used to hang all layers of casing other than the surface casing and to seal the wellhead device components of the casing annular space. Its main functions are as follows: 1. Hang part or all of the weight of each layer of casing except the surface casing through the hanger; 2. Connect wellhead devices such as blowout preventers; 3. Form a pressure seal between the inner and outer casing strings; 4. Provide an outlet to release the pressure that may accumulate between the two sets of pipe strings; 5. In an emergency, fluid, such as well killing fluid or fire extinguishing agent, can be pumped into the well through the side hole of the casing head; 6. Special operations: a. If the cementing quality is not good, cement can be replenished through multiple side holes. b. During acid fracturing, pressure balancing fluid can be injected from the side holes.  

Description of oil pump We offer both API pumps and special pumps, including the following types: - API Pump: RHAC, RHBH, RHAM, RTHBC, THBM, RWBM, RWBC, RWAM, RWACR, RHBMA, and RHBRC. The pumps we provide have the following features: - The inner surface of the pump barrel is processed using carbonization quench and chrome plating technology. - The plunger surface is processed using thermal metal spraying technology. - The pump is designed to meet the requirements of long stroke, high speed, and deep producing. - It offers advantages such as high pumping efficiency, large displacement, wear and corrosion resistance, long-lasting operation, and easy repairment. - It complies with the API Spec 11AX standard and has the certificate of authority to use the official API monogram. Puyang Zhongshi Group Co., Ltd is a professional manufacturer of various oilfield equipments and cementing accessories since 1997, restructured enterprise of SINOPEC. Our group have 10 years export experience and 9 subsidiary factories, more than 500 employees. We are the first-class supplier of resources market of SINOPEC and CNPC. We have the certificates of API 5CT, API 10D, API 11E, API 6A, API 11AX, ISO 9001 and ISO 14001. Our foreign customers are mainly from America, Central Asia, Russia, Southeast Asia, Middle East, etc.

The suck rod pumps can be set 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.   Main parts process and material:   Pump barrel: plain carbon steel plating (A1), ordinary carbon steel carbonitriding (B1), ordinary carbon steel carburizing (B2), low alloy steel nitride (B5). Plunger: 1045 steel spraying (B1), 1045 steel spraying (B2), 1045 steel chrome plating (A1), 1045 steel double chrome plating (A2). Valve ball and seat: stainless steel (A1), cobalt chromium (B2), tungsten carbide (C1), nickel and carbon compounds (C2), titanium carbide (C3). Other accessories: plain carbon steel, low alloy steel, stainless steel, brass and other materials. Type Model Pump Diameter (mm) Plunger length m(ft) Bushing length m(ft) Connection Tubing OD mm(in)     Tubing Pump 20/25-106TH 28.5(1.1/8) 0.6(2)-2.1)(7) 3.3(11)-9.5(31) 60.3(2.3/8)-73.0(2.7/8)

February 19, 2024 Puyang Zhongshi Group is pleased to announce that our factory has resumed production and shipping operations following the conclusion of the Spring Festival holiday. The first batch of goods has been dispatched to Russia and is currently being prepared for shipment, with an estimated prompt arrival at its destination. This represents our continued commitment and effort to serve our global clientele. We also extend a warm invitation to all interested parties to inquire about our products, including oilfield sucker rods, oil pumps, and related well completion tools. Our full range of products and services is ready to serve our customers at a moment's notice. Whatever your needs may be, we are dedicated to providing you with the most satisfactory solutions. Puyang Zhongshi Group has always been dedicated to delivering high-quality products and services to our customers. We would like to take this opportunity to express our gratitude for the trust and support of our customers and friends from all walks of life. Whether you are a new or existing customer, we are committed to serving you with dedication and providing you with an enhanced experience. If you have any questions or requirements regarding our products or services, please do not hesitate to contact us at:    Chris@zspetro.com/whatsapp:+8616650566961.    Our professional team will be available to assist you at the earliest opportunity. We look forward to the opportunity to collaborate with you and wish you continued prosperity and success in your endeavors. We sincerely thank all customers and friends for their continued support and patronage. Yours sincerely, Puyang Zhongshi Group  

In January of 2024, we will delliver the casing cementing tools order to our South America customer. This is our last shipment before the Dragon Spring Festival holiday. This cementing tool order include semi rigid single piece centralizers and slip on stop collars.   Singal piece centralizers are made of 65Mn alloy steel, 65Mn is a kind of spring steel. Stop collars are made of carbon steel.Casing centralizers is used to place the casing at the center of the hole so as to improve the efficiency of the cementing.     Puyang Zhongshi Group is the specialized manufacturer of casing cementing tools, our casing centralizers’ type is including Solid Rigid Type, Positive Type, Welded Spiral Type, Non-Welded Type, Double Bow type.   Casing Size O.D.: 4-1/2 ~ 20 in (114 ~ 508 mm) Hole Size O.D.: 6 ~ 26 in (165 ~ 680 mm) Standard: 10D   If you have inquiries for various casing centralizers, please cotact us at Email: sales@zspetro.com.

Pump barrels, plungers, valve ball & seats, seating nipples are the basic pump parts of sucker rod pumps.   Seating nipples function to the sucker rod pump: Sucker rod pump is equipped with a seating nipple(there are two seating nipples in API-RHBM-AC) , seating nipple connection on the tubing string, down to the bottom of the well with the tubing string.   Specification table of seating nipple: Specification Thread Type Steel Grade 1.9 EUE box *EUE box, EUE box *EUE pin, EUE box *NUE box, EUE box *NUE pin, EUE pin *NUE box, EUE pin *NUE pin, NUE box *NUE box, NUE pin*NUE pin J55,K55,L80,N80 2 3/8 2 7/8 3 1/2 4

The function of casing head 1. Hang part or all of the weight of each layer of casing except the surface casing through the hanger; 2. Form a pressure seal between the inner and outer casing strings; 3. Connect wellhead devices such as blowout preventers; 4. Provide an outlet to release the pressure that may accumulate between the two sets of pipe strings; 5. In an emergency, fluid, such as well killing fluid or fire extinguishing agent, can be pumped into the well through the side hole of the casing head;     Casing head structural characteristics and sealing principle The casing head is mainly composed of bottom casing head, casing hanger, casing head spool, valve and other components. The casing head seal consists of the casing head body, BT-shaped rubber sealing ring, casing hanger, dovetail-shaped rubber sealing ring, top wire V-shaped sealing ring, and sealing gasket ring. ​

The function of the wellhead equipment is to suspend the oil pipe and seal the annular space of the oil casing. The most basic parts of the wellhead equipment are the tubing head (casing tee or cross), tubing tee and sealing box. In addition, it also consists of production valves, back pressure valves, vent sampling valves, oil casing connection valves, etc., and is equipped with oil pipe and casing pressure gauges to observe oil casing pressure. 1. The Xmas tree Wellhead device, commonly known as "Xmas tree", is one of the most important and common equipment for oil, gas and water wells, and is the main equipment for controlling and regulating oil well production. Its main functions are: (1) The weight of all the tubing strings in the suspended tubing and supporting well; (2) Seal the annular space between oil and casing to control casing gas; (3) Control and regulate oil well production; (4) Daily management such as recording oil, sleeve pressure data, testing, wax removal, etc.; (5) Ensure the smooth progress of underground operations such as well cleaning, sand flushing, acidification, and fracturing.

The Thread Protectors are designed to provide protection to the connections during handing transportation,and to prevent debris from entering the threads and tube body. The threads are made in such a manner that they cover all the threads of the connections and prevent the thread protector from stripping or vibrating loose. We can produce premium thread protector and customize. NC23 NC26 NC31 NC35 NC38 NC40 NC44 NC46 NC50 NC56 NC61 NC70 NC77 NC38 DSTJ NC50 DSTJ 2 3/8REG 2 7/8REG

These are used to adjust the depth of downhole tools. All our pup joints are manufactured as per API 5CT requirements. Due to their shorter length, they are typically easier to handle. All hard banding and coating options are available as per required. Premium Pup Joints are also available with premium connections in API or exotic alloy grades. Technical Specifications:- Standard: API 5CT 10th Edition Specification: From 0.75” to 20” Grade: H40, J55, K55, N80, L80, C90, T95, P110, C110, Q125 Connection: EU, NU, SC, LC, BC, and premium thread, Pin * Pin, Box*Pin. Technical Specification Tubing Pup Joints Outside Diameter 0.75 to 4.5 inches nominal size OD Weight