China Puyang Zhongshi Group Co., Ltd. Company News

On 28th.Oct,Puyang Zhongshi Group shipped the stop collar to our client. These spareparts will be used in North America market.   In the last month, a new client from Canada placed order of 2500 pcs of stop collar after the strictly inspection, the products are already on the way. Besides the stop collar,we still have other products in production,such as sucker rod pump, couplings, cementing tools,wellhead tool,with API approved…etc. Of course, if you have any special requirements or OEM service required, please feel free to let us know Puyang Zhongshi Group is the manufacturer with API certificates approved over 20 years in China, mainly in Cementing tools, Centrifugal Pump, Sucker Rod Pump,pup joint&coupling etc. If you have any requirements, please send us email sales@zspetro.com or call us +86 029 89296933

Coupling All of our couplings including API Class T Sucker Rod Couplings, API spray metal sucker rod couplings and API Change-Over Sucker Rod Couplingsare made full in line with API SPEC 11B, with the size range of 5/8”, 3/4”, 7/8”, 1”, 1-1/8”.     Paramater of sucker rod coupling perfomance:   API Class T sucker rod coupling   1)Type: class T, FS and SH coupling   2)Coupling diameter: 5/8 ",3/4",7/8",1",1-1/8"   3) Weight: 0.41-1.29 KG/Pcs   4)Material: Carbon steel AISI 5I40   5)Basic Hardness: HRC 16-23   6) Operating Temperature: -1000~400°C Puyang Zhongshi Group Company Ltd was founded in 1996,which is the restructured enterprise of Central Plains oilfield branch company of SINOPEC . The company registered capital is 6083 million yuan,with annual output value 200 million yuan, 580 employees, including more than 160 technical and administrative staff. Oil machinery is our main products, the leading products include pumping unit,subsurface sucker rod pump, wellhead (Christmas Tree), pressure vessels,drilling solid control series products and cementing accessories, We had attained ISO 9001 in 1998 and API Certificates in 2002 . We have 9 factories, more than 500 employees, and many kinds of production equipments. We have certificates of API 5CT,6A,10D,11AX,11E, ISO 14001 and 9001. With 10 years exporting experience,we have exported to more than 30 countries such as America,Canada,Russia,Venezuela,Columbia,Thailand,Indonesia ,UAE,Saudi Arabia,Kazakhstan etc.  

Sucker Rod Introduction: The sucker rod is a steel rod that used to make up the mechanical assembly between the surface and downhole components of a rod pumping system. The product conforms to API Specification 11B (Oil extraction rod Standard) and other related standard, authorized to use the API monogram. All sizes of sucker rod (standard, heavy, polish rod) which conform to API specification latest version 11B are available in grade K, C, D and HL. Technical Performances: Adopting the advanced production line crack detecting, quenching, the continuous overall tempering and sand blasting processes to achieve higher mechanical strength ability with overall good performance.The thread is cut by the special-purpose numerical control lathe which keeps the rod body still when cutting the threads. The special process could ensure the high precision of the thread with better reliability and life-span                       Puyang Zhongshi Group Company Ltd was founded in 1996,which is the restructured enterprise of Central Plains oilfield branch company of SINOPEC . The company registered capital is 6083 million yuan,with annual output value 200 million yuan, 580 employees, including more than 160 technical and administrative staff. Oil machinery is our main products, the leading products include pumping unit,subsurface sucker rod pump, wellhead (Christmas Tree), pressure vessels,drilling solid control series products and cementing accessories, We had attained ISO 9001 in 1998 and API Certificates in 2002 . We have 9 factories, more than 500 employees, and many kinds of production equipments. We have certificates of API 5CT,6A,10D,11AX,11E, ISO 14001 and 9001. With 10 years exporting experience,we have exported to more than 30 countries such as America,Canada,Russia,Venezuela,Columbia,Thailand,Indonesia ,UAE,Saudi Arabia,Kazakhstan etc.

The stuffing box for the polished rod consists of a cross shell, seal gate valves, sealing pin, sealing cap, and rubber packing. The bottom of the stuffing box can be connected using threads, flanges, or clamps. This device reduces wear on the polished rod and improves oil recovery. Key characteristics of the stuffing box are that it has a unique misaligning feature that reduces the need for precise alignment with the pumping unit, it is equipped with cone packing, and it has a lubricated upper gland (LUG) with a grease zerk for rod lubrication. Optional components include an oil reservoir gland (ORG) and an anti-pollution adapter (APA). The stuffing box has a simple structure, making it easy to install, and it is widely used in the industry. specification     The stuffing box cone packing is available in sizes for polished rods measuring 1-1/8", 1-1/4", and 1-1/2". It comes in a set of four (three top cones and one bottom cone) and also includes one bottom cone. During installation and usage, it is important to inspect and clean the device thoroughly before installation. Pay attention to the size of the polished rod to ensure compatibility with the valve specifications. When installing, adjust the seal compression force until there is no leakage. It is recommended to make adjustments in small increments to prevent a decrease in service life.

Product Application Application and characteristic Position device (stop ring or stop collar), called position ring, stop circular, brake ring, etc. It is used to limit the centralizer or cement basket slip on casing. 1. It is divided into mobile screw type, fixed screw type and buckle type. 2. Install and use the method a. When use mobile screw type stop collar, slip over the casing, tighten the screws using wrench. b. When use fixed screw stop collar, put the collar around the casing, insert the screw, and knock into screws by hammer. c. when install buckle type stop collar, buckle the stop collar onto the casing, lock with pin,knock into the screws.       Stop collars Keep centralizers and other casing attachments in place on the casing. Available in hinged and slip-on styles and size from 2-3/8''- to 30''. Stop collars use set screws for increased holding force. The hinged design is for applications on upset tubing. These stop collars are available in slip-on for tight clearances and hinged for semi-tight clearances. Hinged stop collars that use hardened inserts (dogs) to provide a positive lock onto the casing. The specially designed dogs bite into the casing, which provides the stop collar's strong holding force. The recommended torque on the bolt is approximately 25 to 35ft-lb. When properly installed, the hinged stop collar can provide a holding force up to 40,000lb. Slip-on stop collar with set screws is slipped onto the end of casing and up to the top of the joint to the desired location. The set screws are tightened to approximately 35ft-lbf. This style of stop collar can hold forces up to 20,000lb. They are designed for close-tolerance liner jobs as well as in the installation of cement baskets and cetralizers of different designs. This style stop collar is available in 3 1/2-in. to 30-in. casing sizes.       Specifications,mm 13 3/8″ 10 3/4″ 9 5/8″ 8 1/8″ 7 5/8″ 7″ 5 1/2″ 5″ 4 1/2″   ID,mm 338 272 245 206 193 177 139 126 114   OD,mm 350 284 257 218 285 189 151 138 126   Holding Force,KN 40 40 40 30 30 30 30 24 24         About Puyang Zhongshi Group:   Puyang Zhongshi Group Co., Ltd. was founded in 1996, which is the restructured enterprise of Central Plains oilfield branch company of SINOPEC . The company registered capital is 21.4 million US dollars, with annual output value 71 million US dollars, 580 employees, including more than 160 technical and administrative staff. We leading manufacturer and supplier of pumping unit, subsurface sucker rod pump, wellhead (Christmas Tree), pressure vessels, drilling solid control series products and cementing accessories. Our aim is to provide high-quality products and services to our customers and establish long-term partnerships with them.

Casing cementing tools   Casing cementing tools are also called cementing hardware, which include centralizers, stop collars, float equipments, cementing plugs, stage tools and scratchers. They are mechanical devices commonly used in running pipe and in placing cement around casing.   Floating equipment is commonly used on the lower section of the well casing Some basic types of floating and guiding equipment are: 1. The guide shoe, with or without a hole through the guide nose. 2. The float shoe, containing a float valve and a guide nose. 3. The float shoe and float collar, containing an automatic fill-up valve.   Plug containers hold the top and bottom cementing plugs, and come in two different versions: continuous cementing head and quick-change container. Centralizers: Centralizing the casing with mechanical centralizers across the intervals to be isolated helps optimize drilling-fluid displacement. In poorly centralized casing, cement will bypass the drilling fluid by following the path of least resistance. Two general types of centralizers are: 1. Spring-bow 2. Rigid Puyang Zhongshi Group is the specialized manufacturer for casing cementing tools. We produce the cementing tools according to API standard. Please contact us for your inquiries.                                                                                    

The drill string stands as a vital element in the extraction process for oil and gas exploration and various drilling operations,. Composed by a series of interconnected components, the drill string serves as the conduit for transmitting the drilling force and torque from the surface rig to the drill bit deep below the Earth's surface. This article delves into the crucial components of the drill string, highlighting their individual functions and collective significance in successful drilling endeavors.   The drill stem main includes kelly, drill pipe, drill collar, HWDP, various drilling subs and drilling stabilizers. Drill pipe is at the forefront of the drill string, directly below the drill pipe lie the drill collars, heavy weight drill pipe(HWDP) sits between the drill pipe and drill collars, drill bit is at the lowermost of the drill string.   Puyang Zhongshi Group always supply drill collars(slick drill collars and spiral drill collars), HWDP and drilling stabilizers with competitive rate. Welcome your inquiries.                            

The tubing crossover is used to connecting different size tubing. There are three types such as pin*pin, pin*box, box*box All our products are produced and processed according to API standard, with the materials of steel grade including J55, K55, N80, N80-1, N80, L80, P110 and so on. The couplings have three types, namely STC LTC and BTC. By numerically controlled lathe and import molding cutter, the processing of thread can be finished in one time, which ensures its commonality and interchangeability. We have complete testing abilities, adopting a whole set of single testing apparatus of thread, including tape, pitch, tooth depth, profile and so on. Our products have already passed the identification of the Quality Testing and Inspection Centre of Oil Pipe of CNPC.   Besides the crossover,we still have other products in production,such as sucker rod pump, pup joint, couplings, sucker rod, cementing tools …etc. Of course, if you have any special requirements or OEM service required, please feel free to let us know Puyang Zhongshi Group is the manufacturer with API certificates approved over 20 years in China, mainly in Cementing tools, Centrifugal Pump, Sucker Rod Pump,pup joint&coupling etc. If you have any requirements, please send us email sales@zspetro.com or call us +86 029 89296933

The cement head is a very important device in cementing operations, it may affect the cementing quality. Therefore, the cement head needs to be tested after leaving the factory. What should the cement head be tested for?   (1) Dimensional inspection of cement head The first thing to test is whether the size of the cement head is qualified. There are many types of cement heads, and each type of cement head has many sizes, so it is very necessary to test the size of the cement head. There are two main purposes for testing the size of the cement head after it is produced: -one is to check whether the size of the cement head meets the specified standards; -the second is to check whether the size of the cement head is the size required by the customer.   (2) Detection of cement head connecting threads The thread inspection should according to the inspection standards. Different types of cement head have different thread inspection standards. If other forms of connecting threads are used, other inspection standards need to be used.   (3) Inspection of the overall sealing performance of the cement head The sealing performance test of the cement head is also one of the very important testing contents. It mainly uses clean water to conduct the sealing performance test to see whether the test pressure meets the sealing test pressure regulations. The rotating cement head is also used for rotation performance testing.   (4) Cement head material testing In addition to the above inspections of cement heads, the materials of stressed parts must also be inspected. The main inspection contents include tensile strength testing and hardness testing of metal materials used in parts subjected to tensile loads, and parts subjected to impact loads. The metal materials used are tested for impact energy absorption, etc. After the inspection of the cement head is completed, a mark needs to be placed on the obvious position of the cement head, including product model, working pressure, manufacturer name or registered trademark, product number and date of manufacture, etc.   Strict testing,meets the standards and customer standards, and the market is the only criterion for testing products. Puyang Zhongshi Group has more than 20 years of experience in producing cementing accessories, and its products sell well at home and abroad. 

Reamer Shoes are composed of aluminum eccentric toe cap and body. The scraping function of its aluminum drillable eccentric guide head can remove obstacles in the well, and is particularly good at removing low-side debris in horizontal wells. The low-side debris is dominated by the loose rock formations of the Tertiary Guantao Formation and Dongying Formation in the Bohai Basin. Horizontal wells are a very common problem. Aluminum eccentric guide toe body (connected to the casing line) The aluminum eccentric guide toe can bypass and clear obstacles in the well.     Hydraulic rotary guide shoe   It is an efficient casing running guide shoe with a rotating function. It changes the flow pattern of the drilling fluid at the bottom of the hole through rotation, reduces the friction of running casing, improves the cutting carrying capacity of the drilling fluid, prevents the stratum from being stuck when inserted into the formation, and solves the problem of wellbore shrinkage and Problems such as ground collapse   Features: 1. The hydraulic turbine power drives the head of the shoe to rotate, guiding the drilling fluid to form a high-speed rotating vortex, thereby cleaning and trimming the wellbore (pipe wall);   2. The guide toe head is made of aluminum or resin eccentric type. When encountering obstacles, it can smoothly climb over obstacles or shrink, and can guide casing strings into the well more effectively;   3. The interior of the body is made of PDC drillable material;   4. Add a spiral scraping wear-resistant belt to the outside and use high-quality tungsten carbide cylindrical inlay.