Shengli Oilfield R&T Group

The maintenance of the wellhead xmas tree . The maintenance and maintenance of the tree is: keep the equipment clean, no oil, no oil, no rust, no pine. Moving, intact parts and parts switch are flexible and easy to use. To domestic CY250 tree as an example, the parts are: cross, left and right sides casing pipe gate, tubing head, tubing spool, total gate, about production valve, test gate or paraffin gate (blowout preventer), tubing hanging roof of silk, clamp, steel ring, and other accessories. 1. The failure and maintenance of gate type 250 gate are easy to occur. (1) replace gate thrust bearing and copper sleeve. Open the gate, remove the handwheel pressure cap, remove the handwheel and handwheel key, remove the bearing gland, remove the copper sleeve from the screw thread, remove the old bearing, and replace the new bearing with the butter. Put the copper suit on the screw, the screw thread into the gate big gland, install the bearing gland, hold the handwheel and the han...

Wellhead and Christmas tree equipment is an important equipment of oil and gas drilling, the casing head, tubing head, oil (gas) tree of three parts, used to connect the casing string and tubing string, and the sealing between the layers of casing and tubing annulus, and can control the production wellhead pressure and adjust the oil (gas) wellhead flow, also can be used in acid fracturing, injection, testing and other special operations. Product specification The design conforms to the requirements of API SPEC6A specification. Rated working pressure: 2000-2000 psi. Rated temperature: K, L, P, R, S, T, U and V. Product material level: AA, BB, CC, DD, EE, FF. Product specification level: psl1-psl4. Performance requirements: PR1 and PR2. Applicable media: oil, natural gas, mud, etc. 井口装置及采油树设备是油气开采的重要设备，由套管头、油管头、采油（气）树三部分组成，用来连接套管柱、油管柱，并密封各层套管之间及与油管之间的环形空间，并可控制生产井口的压力和调节油（气）井口流量，也可用于酸化压裂、注水、测试等特殊作业。     产品技术规范     设计符合API SPEC6A规范的要求 ...

Wellhead & X-mas tree  or  Christmas tree  is a wellhead control equipment for testing oil and gas when the oil (gas) well is completed, or a wellhead control device when the oil is used for oil recovery. It consists of tubing and many gates and tee or four-way, directly mounted on the casing head. Only one side of the oil tree with the oil pipeline, called the single wing Christmas tree; The two sides are lined with tubing, known as the double-winged tree. The oil Christmas tree is equipped with oil nozzle (choke nozzle) to control the production of oil and gas by changing the oil nozzle of different diameter. The main components of the Christmas tree are tubing head, tubing hanger, flange and some valves. The  oilfield wellhead valves  mainly have the oil mouth (throttle), the production wing valve, the paraffin valve, the main valve and the casing valve. Tubing head The tubing head is mounted on top of the top casing and is used to support the gravity ...

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 ...