Shengli Oilfield R&T Group

螺纹（心轴）式套管悬持器   casing hangers, threaded(mandrel)   在套管头内用套管上的外螺纹或内螺纹连接心轴以悬挂管柱的机构。  In the casing head, the external or internal threads connected to the spindle are connected to the mechanism of the hanging string. 套管县挂器（卡瓦） casing hangers, (slips)   在套管头内用楔形器件夹持套管，以悬挂套管柱的装置。 In the casing head, the sleeve is fitted with a wedge device to hang the casing string. 套管头壳体 casing head housing 连接表层套管的最上端，用于悬挂和密封套管柱的装置。 A device that connects the top end of the surface casing for suspension and sealing of the casing string. 套管头四通 casing head spool 连接在套管头上，用于悬挂和密封其它套管柱的装置。 A device attached to a casing head for suspension and sealing of other casing columns. 节流阀 chock ( choke manifold for sale ) 限制和调节流体流量的阀  A valve that restricts and regulates fluid flow. 采油树 Christmas tree, or xmas tree, oilfield christmas tree 装于油管头最上部法兰上的阀门和附件的组合装置，用于控制井的产量。 A combination of valves and accessories installed on the top fl...

The main problems to be overcome in designing a reasonable well casing hanger are as follows: 1. The tendency of the hanger slips to crush 2. The tendency of the hanger gasket to crush the top section 3. The tendency of pressure-squeezed top section in annular space Each of these forces tends to narrow down the inner diameter of the tube, which is not serious. But combined, they can cause damage. Excellent casing hanger design can avoid the collapsing forces concentrating on the same part of the top section.  The limited circular workspace causes a big problem to the design of the  casing hanger . A larger height and diameter will enable the manufacturer to produce a larger load hanger. The equipment designed in the deep well must be in accordance with the size before the the drilling. Under the existing restriction conditions, put the heavier on the hanger. Casing hanger load capacity The strength of the outer casing and the load capacity of the casing head and hanger must b...

As one of the biggest oilfield wellhead manufactures and exporters from China, R&T Group is proud of its products and service for overseas oilfield customers. For the better understanding and communication its customers, here to explain the products details. In this article, here to mainly introduce the wellhead equipment tubing hanger, the installation, testing, as well as the difference between tubing hanger and casing hanger. Tubing hanger installation The  tubing hanger   is located in the wellhead position, inside of the tubing four pass or the oil tree, mainly including the locking device, guiding positioning device, sealing structure and penetrating structure. The main forms include of horizontal oil tree general tubing hanger, horizontal oil tree extension tubing hanger, concentric tubing hanger and multi-air tubing hanger. A. Before hoisting, check to see if the flange and sealing parts of the tubing head are matched to the casing head. If there is any d...

Water injection wellhead should be designed in accordance with the following requirements 1. The water injection wellhead should meet the requirements of positive injection, back injection, mixed injection, positive washing, reverse washing, metering oil pressure and casing pressure sampling water. 2. The water injection wellhead needs meet the requirements of well test (such as downhole pressure, temperature, water quantity, downhole sampling, sand surface height and artificial bottom hole). 3. It can also satisfy the requirements of acidification, fracturing, water shutoff, profile control and water absorption profiles. 4. According to the requirements determined by the water wells, the water injection wellhead should have the following characteristics: high strength, long life, work pressure greater than the formation of the rupture pressure, light quality, small size, simple flow, and to minimize the dead water pipe section.  5. The installation of the water inject...

1. Construction preparation (1) The personnel must be familiar with the fracturing construction design; (2) Investigation of well fields and roads: Investigation of road conditions to the wellsite, including: road surface, bridge, culvert, elevated cable and so on; Investigate the size of the well field and the surrounding villages, farmland, ponds, rivers and other conditions; Investigation of fracturing pipe column structure and operation progress; Record the investigation and draw the schematic diagram of the well; (3) Preparation of  fracturing wellhead equipment Prepare fracturing equipment according to construction design requirements; Prepare the liquid tank car, and guarantee the cleaning of the tank; If a surface tank is needed, move it to the well in advance. The parts of the surface tank should be in good condition, the gate should be flexible and easy to use, and keep the tank clean; (4) Proppant is prepared according to the design requirements; (5) Preparation of ...

First, open wells (from the injection well): Make sure that the production system is completed and that the flow is smooth enough to accept fluids after well opening. All the valves on the Christmas tree oil oilfield are in the correct switch state and can control the nozzle (adjustable nozzle). Check the wellhead hydraulic and safety equipment status. Second, shut the well (since the injection well) Third, in some downhole operations, the operating procedure of the Christmas tree valve is as follows: Close the well (nozzle, wing valve, purge valve, ground relief valve and main valve) before entering the downhole tool. Open the oil tree cap, install the high riser, the blowout preventer, and then test the pressure by the riser. Open the safety valve on the ground, with a fused screw cap on the safety valve to lock the ground safety valve. In the open position, test the reliability of the locking screw cap.   Lock down the hydraulic control circuit of tubing s...