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Side supporting oil drilling and completion technology


Easy to sand, while a small hole, grit pocket limited, easy to sand after sand strata buried reservoir. For the control of production pressure, to prevent formation sand, in the production process, try to choose a rod pump mechanical recovery of mining, drilling and production side of the back when you follow the step by step on the way to fill holes, if really necessary to complete the next} 1.3.3 pump should be connected for a basket in the lower unit to prevent the pump clips, skin care and other small pieces of litter caused by the complexity into a small casing salvaged. Periodic output of the production process for testing liquid sand content analysis, dynamic monitoring. 2 T oil of Arts and Techniques 2.1 lateral drilling card blocking technology series 2.1.1 Slim Hole Card blocking layer technology to change the side for ~ O95mm casing drilling,[link widoczny dla zalogowanych], can be developed HDQSA a fishing bridge plug 76 and IqDY341-76 small diameter packer. HDQSA a fishing bridge plug 76 can be closed by the seat, anchoring, sealing bodies of three parts, there are two kinds of cables and tubing packer transmission mode of both can be fishing, mining can be achieved on the back; HDY341-76 small-diameter seal sit in the main block Packer tight,[link widoczny dla zalogowanych], righting,[link widoczny dla zalogowanych], enclosed bodies of three parts, when used with Y441-115 packer used in combination to facilitate the salvage and sealing the top of the tail pipe. Typical well Example: River side of ramp 76 3 well, the well casing structure of 139.7mm �� 95.3mm, with a 76 HDQsA lower layers bridge closure Fonseca, Y445 a l14 + Y341-76 card the upper packer well section loss, measures moisture content down to 94.9 before the measures 8o. 4, the daily oil production by the 2.3t /) ~ to 10.6t /: ~, the well sealing and to verify the success of small diameter card block and bridge plugs seal. 2.1.2 Side Channel Blocking blocking drilling sidetrack well structure complex, prone to leakage of the upper part of a large pipe, tail pipe leakage at the top hanger, a small tube of pipe leakage or channeling. According to the site and type of casing leakage, the use of different sealing and supporting 212 arts, and have achieved significant results. 2.1.2.1 Plugging of the original loss of the well casing cement block large casing high above the leak back to the freedom of the casing, the use of modified thixotropic cement or cement, such as light gray sand blocking agent network, Micro seam sealing sleeve, threaded coupling loss or the original large set of wells have been penetrating the layer, the use of ultra-fine cement block technology. 2.1.2.2 Top management liner hanger leakages. For the early loss of small casing hanger at the validation and closure, closure device developed lateral drilling, filling the domestic blank of this technology. The tool has been put into 50 wells, the success rate of 92.5%. 2.1.2.3 channeling small tube closure. Side of the drilling bit by the large size and inclination such restrictions, very few cases of poor cementing wells exist, for channeling the isotope to find, based on the method used to squeeze into the shot hole sealing channeling process. More than 600 projects using ultra-fine cement, construction of a total of 4 wells, cumulative oil 11,000 t,[link widoczny dla zalogowanych], and achieved good results. 2.2 Special research and development of small tubing drilling in the side of the block, sand, red sand and other construction in the exploration of small tubing seal strength is an important factor of success or failure. In view of drilling a small set of structural side, we are now in construction, according to two kinds of special casing of small R & D pipeline, and access to the national utility model patents. 1.9 when the thick filaments buckle 2.2.1 (~ o48.3ram) tubing for ~ 89mm casing of the pipeline, compared with ordinary small tubing, wall thickness increased by 1.8mm, and the mechanical properties greatly improved} L-rods with the size of air compared to the increase in diameter, but also to overcome the hollow rod sealing cone buckle unreliable shortcomings. 2, when the thick moss 2.2.2 (~ o60.3ram) tubing of the tubing for ~ 95mm casing, the coupling under the same maximum diameter, wall thickness increased by 1.8mm, while the system changes from the deduction 1O deduction for the flat-style 8-thread, cross-sectional area increases to improve the mechanical properties of tubing. 3 Conclusions 3.1 New ~ o95mm slim hole casing and completion technology effectively solves the side of the drilling and completion and process within the implementation process revealed a small diameter, perforation penetration depth is not enough, slice mining is difficult, as a set of tubing low intensity tube problems; 3.2 and ~ o95mm matching slim hole casing perforator 68 of the indicators are more than the original side of the drilling perforator, has become the preferred ~ o95mm casing perforation perforation control; 3.3HDQSA bridge plug can be fishing for a 76 bridge plug and HDY341-76 small-diameter packer can achieve ~ o95mm card slim hole casing seal effective to solve the problem of lateral drilling Slicing; 3.4 R & D the two were special for the small tubing casing and ~ 95mm ~ 89mm casing,[link widoczny dla zalogowanych], the sealing strength, a big improvement in the level of closure for the side of the post-drilling, sand, red sand and other construction exploration provides protection.
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