China Puyang Zhongshi Group Co., Ltd. Company News

On 16th.Nov, Puyang Zhongshi Group shipped 1660pcs of  casing centralizers to our client. These Casing Centralizers will be used in Africa market.   At the beginning of January, a new client from Africa placed the order of Casing centralizers. After 25 days production and strictly inspection, the products are ready to delivery. The order is Slip-on welded type Casing Centralizers. Besides, we still have other products in production, such as pup joint, 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, OCTG, Centrifugal Pump, Sucker Rod Pump, etc. If you have any requirements, please send us email sales@zspetro.com or call us +86 029 63639397

On 10th.Nov,Puyang Zhongshi Group shipped sucker rod pump to our client. These pumps will be used in Russia market.   At the end of of Month, a new client from Russia placed order of 30-250- RWBM sucker rod pump, after the strictly inspection, the products are already on the way. Besides the sucker rod pumps,we still have other products in production,such as casing& 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

Pump components There are seven major components for downhole rod pumps: standing and traveling valves, plunger, barrel, seating assembly, pull tube or valve rod (for insert pump), and the fittings that hold the assembled pump together. The most common of these components and the final types of assembled pumps are covered by American Petroleum Institute (API) Specification 11AX.   Types of pumps API recognizes two main types of pumps: rod and tubing. Rod pumps also are called insert pumps because they are run (inserted) in the production tubing. Tubing pumps are so named because the working barrel of this pump is coupled with the production-tubing string. There is a wide range of plunger (or pump-bore) sizes standardized by the industry. The API pump-bore sizes that are currently available range from 1 1/16 to 3 3/4 in. in diameter. This 1 1/16-in. size has been added back in the latest edition of the standard. Additionally, a new barrel type has been accepted in the latest API Spec. 11AX. This is the "X-type" barrel. It has a thin-walled barrel configuration for threads on either end of the heavy-walled barrel and is available for metal plungers only. This type of pump does not require the extension couplings normally needed for heavy-walled barrel pumps. Thus, this pump reduces the burst or collapse concerns of the thin-walled extension couplings and allows deeper producing depths to be attained.   API pumps and nomenclature While there are only two main types of pumps standardized by API, there are four different types of rod pumps. These are classified by the type of barrel (standing or traveling) and where the pump is anchored (top or bottom). API Spec. 11AX. shows the letter designations for the various types of rod and tubing pumps that are available for different barrel thicknesses and either metal or soft-packed plungers. The complete pump designation of an API pump adds dimensional diameters and lengths to the letter designations. This has been modified in the latest revision to incorporate all approved sizes and barrel types along with separating the extensions into the top and bottom lengths, if required. The complete API designation includes the following: Nominal tubing size (from 1.9- to 4.5-in. OD) - represented with 2 digits Basic bore diameter (from 1.0625 to 3.75 in.) - represented with 3 digits Type of pump (rod or tubing) - R or T to indicate type Type of barrel (heavy, thin, or X type) - single alpha character to represent the barrel type Seating-assembly location (top or bottom) - A (for top), B (for bottom), or T (for bottom, traveling barel) Type of seating assembly (cup or mechanical) - C or M to indicate type Barrel length (ft) - single digit length Nominal plunger length (ft.) - single digit length Length (in.) of upper extension (if required)- single digit length Length (in.) of lower extension (if required)- single digit length API Spec. 11AX. shows that, for example, a 1¼-in. bore-rod-type pump with a 10-ft heavy-walled barrel, a 2-ft upper extension, a 2-ft lower extension, a 4-ft plunger, and a bottom-cup-type seating assembly that will be used in 2 3/8-in. tubing would be designated as 20-125-RHBC-10-4-2-2. It is important to know that the users of API pumps need to provide, along with the pump nomenclature, the following ordering information: barrel and plunger material, plunger clearance (or fit tolerance), and valve (ball and seat) and fittings material. The materials normally available for each of these components also are now included in the latest edition of API Spec. 11AX.   Non-API and Specialty pumps The types of pumps, sizes, and component materials that are included in the API standards are based on the best industry practices that meet widespread industry needs. While API standardizes the majority of pumps and components that are used in sucker-rod lift, there are special parts and pumps that have been developed by manufacturers to try to solve specific pumping problems. This specialty equipment should be considered when best industry practices and standardized components have proved unacceptable. However, the manufacturer of these components should create all parts to the same quality level required in API Spec. 11AX. Useful specialty pumps include the following: Casing pump for production without tubing Pumps with two plungers that act in series to increase displacement High-compression plunger assembly or pump for handling gas-interference problems Three-tube pump for handling fines or solids Pumps with a shorter barrel than normally recommended, so that the plunger completely wipes solids free of the barrel and prevents sticking. Additionally, there are special pump components, such as valve rods, valves, and tubing drains, that are sometimes beneficial in situations in which the capabilities of normal API pumps and components have been exceeded. The manufacturer of special, non-API pumps and components should be contacted to determine the working capabilities and limitations of any of these specialty components. However, these items should be selected with care and used only after the best production effort has been thoroughly tested with standard components.  

How Does Artificial Lift Work? Artificial lift is a process used on oil wells to increase pressure within the reservoir and encourage oil to the surface. When the natural drive energy of the reservoir is not strong enough to push the oil to the surface, artificial lift is employed to recover more production. While some wells contain enough pressure for oil to rise to the surface without stimulation, most don't, requiring artificial lift. In fact, 96% of the oil wells in the US require artificial lift from the very beginning. Even those wells that initially posses natural flow to the surface, that pressure depletes over time, and artificial lift is then required. Therefore, artificial lift is generally performed on all wells at some time during their production life. Although there are several methods to achieve artificial lift, the two main categories of artificial lift include pumping systems and gas lifts. Methods Of Artificial Lift   Beam pumping Hydraulic pumping Electric submersible pump Gas lift     The most common type of artificial lift pump system applied is beam pumping, which engages equipment on and below the surface to increase pressure and push oil to the surface. Consisting of a sucker rod string and a sucker rod pump, beam pumps are the familiar jack pumps seen on onshore oil wells. Above the surface, the beam pumping system rocks back and forth. This is connected to a string of rods called the sucker rods, which plunge down into the wellbore. The sucker rods are connected to the sucker rod pump, which is installed as a part of the tubing string near the bottom of the well. As the beam pumping system rocks back and forth, this operates the rod string, sucker rod and sucker rod pump, which works similarly to pistons inside a cylinder. The sucker rod pump lifts the oil from the reservoir through the well to the surface. Beam Pump Usually pumping about 20 times a minute, the pumping units are powered electronically or via gas engine, called a prime mover. In order for the beam system to work properly, a speed reducer is employed to ensure the pump unit moves steadily, despite the 600 revolutions per minute the engine achieves.  

VALVE BALL AND SEAT   The valve ball and seat is a important part of the oil field mining pump, its using directly decides the service life of pump.According to the corrosion characteristics of oil, oil Wells can provide different material   We provide different material and structure of the valve cage according to different well conditions. For different material of the valve cage, we have different heat treatment process, to ensure the safety of the use and its mechanical properties. We can produce all pump accessories, at the same time, also undertake the processing of other equipment accessories. Material   Unfinished Product of V11 Valve Ball and Seat   Finished Product of V11 Valve Ball and Seat   Packing of V11 Valve Ball and Seat   Inspection of V11 Valve Ball and Seat

Cementing head   Cementing head is a device installed on the top of casing during cementing. During cementing operations, a cement plug for cementing is pre-placed in the cement head, including an upper plug and a lower plug. Put in the lower plug before injecting the cement slurry, and then put the upper plug on the upper plug after the predetermined amount of cement slurry is poured, and then substitute the mud or clear water to make the upper plug go down. When the lower plug is blocked by the supporting ring, the partition in the center hole is broken until the cement slurry is completely squeezed out of the casing. When the upper and lower plugs collide, the liquid channel is blocked, the pump pressure suddenly increases, and the cement is injected. End. After the cement injection, close the gate leading to the outside of the cement head and remove the connecting pipeline.   Cement casing head When the lower cement plug is released, it rotates to exit and releases the lower stop pin. The lower cement plug leaves the inner cavity of the lower cement plug under the push of gravity and pumping liquid (the release indicator pin is shown), and is driven to the casing along the inner wall of the casing. On the floating hoop. When the cement plug is put on, rotate and exit to release the upper stop pin. The upper cement plug is pushed by gravity and displacement fluid to leave the inner cavity where the upper cement plug is located (the release indicator pin is shown), displace the cement slurry and clean the inner wall of the casing Until it coincides with the lower rubber stopper and hits it.     Liner cement head   The liner cement head is used for liner cementing. The stern tube cement head is composed of lifting pup joint, body, rotating bearing mechanism, drill rod stopper pin mechanism, ball throwing mechanism, drill rod connection pup joint and valve manifold, as shown in the figure. The stern tube cement head is mainly used for stern tube cementing, and the functions of the lifting sub and rotating bearing mechanism are the same as the corresponding mechanism of the drill pipe cement head. When the tail pipe hanger is seated, rotate the handle of the pitching mechanism, and the ejector rod will eject the ball from the inner cavity of the pitching mechanism. The ball is pushed by gravity and pumped liquid and falls on the hanger ball seat along the inner cavity of the drill rod. , Under the action of pump pressure, the tail pipe hanger can be seated. When releasing the tail pipe rubber plug, rotate the handle of the drill pipe stopper pin mechanism to retract the stop pin from the inner cavity of the drill pipe plug, and the drill pipe plug will leave the inner cavity of the drill pipe plug under the push of the pumped liquid and move along the drill pipe The inner wall falls on the rubber plug seat of the tail pipe, and the rubber plug of the tail pipe is cut and released under the action of the pump pressure.