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Construction technology two anchor bolts and high pressure plugging technology Zhou Ji, Daqing Oil Production Plant, Daqing Qingjian Oil Construction Company, 163001, Daqing City, Heilongjiang Province, 163712, Heilongjiang Province, Heilongjiang Province, 1 foot pedal bolt transplant technology, beam pumping unit up and down stroke The unevenness of the load often causes the base anchor bolt to loosen or even break. If it is not repaired in time, the stress concentration and dynamic load will increase, and the bottom I-beam will be cut and the pumping unit will be overturned. The traditional approach is to switch to a new foundation, for which the pumping unit must be reinstalled or adjusted in situ. It takes longer to install 46 mountain in situ when the installation is required. In order to solve such problems, a new technology of anchor bolt transplantation was adopted.
The construction process type 200 diamond core drilling machine drills near the failed anchor bolt, and its position is suitable inside the bottom beam. The aperture and depth are determined by the size of the model and the bolt to be implanted. For example, when using a M27 bolt with a length of 0 mm, the pore size is to deposit impurities in the hole, and then the micro-expansion structure glue is used to prepare the new bolt in the hole by the on-site preparation of the epoxy resin and the solvent. After several hours of solidification of the micro-expansion structural adhesive, the pressure bar of the bottom beam of the pumping unit is fastened to the anchor bolt.
Process features are fast. The transplanting anchor bolt is about 30, and only the passenger and cargo dual-purpose vehicle and the Taiwan diamond drilling rig can be put into operation on the day of construction on the same day.
high quality. Does not affect the original installation accuracy of the pumping unit, the micro-expansion structure glue can be more than 50MPa in the high-speed 12, no shrinkage, oil resistance, fatigue resistance and anti-aging properties.
Economic Benefits This technology has been used to treat 21 wells, saving costs of 1,659,300 yuan. For example, in the middle 135 well, the foundation of the beam-type pumping unit is reinforced and repaired according to the traditional method, and the budget is 35,000 yuan per unit. The cost of using bolt transfer technology is only 0.65 million yuan per unit. According to the oil production meter, the bolt recovery method can reduce the production time and reduce the production time. If the oil price is 0.1 million yuan, the cost will be 50,000 yuan. The two totaled 78,500 yuan.
2 Water well non-stop high-pressure plugging technology Because the oilfield production system environment is suitable for sulfate-reducing bacteria containers, especially high-pressure oil and gas water wells, corrosion perforation often occurs, causing leakage of oil and gas. In the past, it was basically the use of welding and patching to fill holes and plugging, which was time-consuming and labor-intensive. Especially when the fire is strictly prohibited and the production cannot be stopped, the conventional welding repair method is more difficult and unsafe.
The high pressure plugging method can solve this problem.
According to the site location and pressure, the construction process is designed according to the principle of plugging and the technical specifications of the pressure vessel. A high-pressure plugging device consists of two parts: high-pressure sealing box and high-pressure injection system of sealant and must be checked by strength; then a leak is established. The sealing chamber capable of withstanding high pressure finally uses an external driving force greater than the pressure inside the external spraying medium to seal the sealing agent with plasticizing and solidifying properties to the leakage medium, filling the closed cavity with a high pressure gun, properly blocking the leakage passage, and leaking A new fixed seal structure is created after the part is cured to prevent the fluid medium from leaking outward.
The process features are quickly constructed. It can be constructed with temperate pressure and non-stop production. The sealing structure is simple and the sealing is fast.
Wide application range, suitable for hole crack welding defects on flange pipe containers and some equipment, and plugging of threaded joint wellheads, etc., suitable for leakage medium temperature of 200,800t medium pressure is vacuum degree 40MPa.
Economic benefits High-pressure plugging has been carried out 15 times, a total savings of 2.589 million yuan. For example, Shuijing South 350, wellhead ring steel vertical cylindrical steel tank wall prefabrication new method Su Shengzhu Sun Zuixu Zhongyou Pipeline Company 124103 Liaoning Panjin City siding prefabrication is the key process of tank production and installation, its prefabrication Quite large, its quality directly affects the quality of the tank assembly. Usually, the gantry cutter is used to cut and prefabricate the cans. Because the gantry cutter has large volume and self-weight, it is not convenient to transport. It also needs to cast the reinforced concrete track foundation on the construction site, costing more than 30,000 yuan each time and costing. Working hours. To this end, combined with the previous experience of semi-automatic cutting machine for edge plate cutting prefabrication, the precasting process of the can plate was improved. The improved can prefabrication method 1 replaced the method of using the gantry cutter.
Cutting, the machine section is composed of two parts, which are made of steel and made of lightweight rails, which can be assembled and disassembled at any time. The other part is the cutter, which consists of 2 to 4 micro-cutting machines. It can achieve the cutting quality effect of the gantry cutter.
The semi-automatic cutting machine has the characteristics of simple structure, easy assembly, convenient transportation and the like, and can cut the edge of the can plate at the same time. The actual use proves that the quality requirement of the can cutting and prefabrication can be fully satisfied, and considerable economic benefits are obtained, so it is worthy of popularization and application. The problem to be noted in use is to measure and adjust the position of the orbit with the theodolite after installation to ensure that they are parallel or perpendicular to each other.
The pedestal surface is flat, and the gantry structure must be a stable steel structure, and the prefabricated quality of the siding is not affected by the deformation of the can plate during the prefabrication process.
The appropriate length should be reserved at the end of the track to ensure that the micro-cutting machine completes the pre-cutting of the wall panel to prevent the quality of the panel after cutting due to the thermal expansion and contraction of the cutting process during the secondary cutting.
In the prefabrication cutting process, it is necessary to cut the wall panel with cold water to ensure the accuracy of the production and installation of the rail, and the cooling portion is cooled.
The plate cracked, causing serious leakage of wellhead sewage. The minor repair could not enter the pressure plugging. It only cost 23,000 yuan, which is more economical than conventional welding. If it is overhauled, it will cost 185,000 baht.
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