SU1356968A3 - Lining material for fettling perforator on metal base - Google Patents

Abstract

The invention relates to hydrocarbons and is intended to open up the formation of wells. The purpose of the invention is an increase in perforation penetration. Lining material facing punch is made on the basis of metal. As a metal, bismuth or an alloy of bismuth-based eutectic composition with lead and / or tin, or antimony is used. The presence of bismuth in the material allows an extremely large penetration depth to be achieved without the formation of plugs. The use of this material improves the hydraulic connection between the reservoir layers and the space inside the pipe. As a result, the production of hydrocarbons increases, the specific decreases, i.e. the arrival is at the actual length of the well, the number of explosions while maintaining the same flow results. 1 tab. § OE OO CO O5 00

Description

The invention relates to opening a wellbore by perforating pipes for producing hydrocarbons.

The aim of the invention is to increase the penetrability of the material during perforation.

The footer-5 of increased efficiency contains 0.5-100% bismuth and may have an asymmetrical shape or it may be made in the form of a cone, a cone or a double cone, or a truncated cone, etc.

The lining of the coating is effective with g-lining material. According to the invention, the average depths are formed by lining materials obtained from bismuth-containing eutectic alloys containing,%: bismuth 55.5 and lead 44.5 (optimum melting point is 124 ° C), bismuth 58 and tin 42 (optimum melting point is 140 ° C ) or bismuth 48, lead 28.5, albumin 14.5 and antimony 9 (the optimum melting temperature is 226 ° C). These liner cladding materials containing 48–60% bismuth, prepared from eutectic alloys and having a conical shape prevent clogging of the perforation channels by plugs, increase the penetrating ability of hollow explosive charges. The form of the lining layer is a material of bismuth copper alloys containing relatively little bismuth. These alloys are also at a very small, for example, 0.7% share of bismuth, extremely hrrshki and are destroyed by the DI | Namic force effect of the powder as by a detonation explosion. As a result, perforation occurs, free from traffic jams.

The following rational form of execution of the lining coating of increased efficiency is formed by lining materials consisting only of bismuth. With these materials, an extremely large penetration depth can be achieved without congestion.

Compare the lining layer of bismuth, made of the proposed material with a known copper lining layer. Equipped with two types of footer materials in the rest20

on the penetration of the proposed lining material by 44% more than with known lining materials.

It is also seen from the table that with the proposed footer layer no plug formation occurs. Thus, the proposed lining material, compared with the known, has a higher efficiency.

I,

In wells intended for

the extraction of coal hydrogenation products, 30 due to penetrating kangshovs of greater depth penetrated in the cemented pipes and without traffic jams, the hydraulic connection between the reservoir layers and the space inside the pipe is improved. As a result, hydrocarbons can be produced in large quantities. Taking into account that the length of the penetrating channels increases during perforation and that the channels 40 do not contain any plugs, it is possible to reduce the specific, i.e. the number of explosions at the well length, while maintaining the same flow results.

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Claims (1)

Invention Formula The lining material of the perforated metal-based perforator, about t, is characterized in that, in order to increase the penetrability of the material during perforation, it contains bismuth or an alloy of eutectic composition on bismuth OQHOBe with metals as metal; lead and / or tin, or antimony. the same hollow discharge charges were introduced into aluminum, then the mass. Twenty explosions were carried out each time and the minimum and maximum penetration depths were checked, and then the average cross section and the possible formation of traffic jams. The table shows the results obtained. From the data in the table it can be seen that the minimum penetration depth for the proposed material above the coating is the same with the maximum penetration depth measured with the known lining material. Average depth on the penetration of the proposed foot-. The amount of material used is 44% more than with known lining materials. It is also seen from the table that with the proposed footer layer no plug formation occurs. Thus, the proposed lining material in comparison with the known one has a higher efficiency. I, In wells intended for the extraction of coal hydrogenation products, due to penetrating kangshovs of greater depth pierced in the cemented pipes and without traffic jams, improves the hydraulic connection between the reservoir layers and the space inside the tubes. As a result, hydrocarbons can be produced in large quantities. Taking into account that the length of the penetrating channels increases during perforation and that the channels do not contain any traffic jams, it is possible to reduce the specific, i.e. the number of explosions at the well length, while maintaining the same flow results. Invention Formula The lining material of the perforated metal-based perforator, about t, is characterized in that, in order to increase the penetrability of the material during perforation, it contains bismuth or an alloy of eutectic composition on bismuth OQHOBe with metals as metal; lead and / or tin, or antimony. Minimal Maximum Average Frequency of traffic jams,% Editor Y. Sereda Tehred L. Ser Dukova Proofreader A.T. Order 5816/58 Circulation 533 Subscription VNISHS of the USSR State Committee. for inventions and discoveries 113035, Moscow, Zh-35, Raushsk iab, D. 4/5 Production and printing company, Uzhgorod, st. Project, 4 55