SU1446289A1 - Arrangement for investigating wells with bottom hole pumps - Google Patents

Abstract

The invention relates to the oil industry and is intended for the study of downhole wells. The goal is to increase reliability. The device includes a housing 1 with an axial hole 2 and a cap 3 with a hole 4, suspension wire (PP) 5 and a descent device (SP) 6. The housing 1 is made in the form of a truncated cone with an annular shoulder 7 in the upper part and has

Description

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additional holes 8 for the flow of a well by the well, remote from the axis of the housing 1 by a distance smaller than the radius of the joint venture 6. A hemispherical recess (PU) 10 is made at the lower end of the housing, the diameter of which exceeds the diameter of the joint venture 6. 6 and together run down through the tubing. When SP 6 with the device reaches a .. liquid level, it stops, since 8 holes closed SP 6. This fixes the level of liquidity. SP 6 continues to descend and opens openings 8. The liquid is expelled.

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The invention relates to the oil industry and is intended for the study of downhole wells.

The purpose of the invention is to increase reliability.

The drawing shows a device for the study of deep-well wells, a general view.

The device consists of a housing 1 with an axial bore 2 and a clamp 3 with an axial bore 4, as well as suspension wire 5 and a descendable depth gauge 6. Axial holes 2 and 4 are designed to pass the suspension wire 5 of the slope depth gauge 6. The housing 1 is complete in the form of a truncated a cone with an annular shoulder 7 in the upper (wide) part. Case 1 and cover 3 have additional openings 8 and 9 for the flow of the borehole fluid remote from the axis of the body at a distance less than the radius of the upper end of the descent device 6. At the bottom end of the case 1, a hemispherical recess 10 is made, whose diameter exceeds diameter descent depth of the device 6.

The device works as follows.

 The device is installed above the descending deep-well device 6 on the wire 5 and together with it down through the tubing. When the descending depth instrument 6 is set

and PP 5 descends after SP 6 and catches up with it. When the device with SP 6 reaches the spring core, the annular shoulder 7 sits on the support ring of the core, and the conical surface of the housing 1 sits between the spring feathers of the core. This fixes the length of the pipe suspension. SP 6 exits PU 10 and makes the necessary measurements, for example, the depth of the slab. SP 6 is centered in PU 10 and lifted, releasing housing 1. Then all devices are raised to the wellhead. The device eliminates breakage of PP 5 due to the gearing for the str. 1 il.

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By realism it reaches the level of the liquid in the pipes, it stops, since the holes 8 for the flow of the liquid are closed by the descending depth gauge 6. This moment fixes the height or level of the liquid. When the device is stopped, the lowered descent device 6 under the force of gravity moves downwards and opens the openings 8 of the device. The cavity of the housing 1 is filled with liquid — and the device descends after the lowered depth gauge 6 through the suspension wire 5, it catches up with the lowered depth gauge 6 and the latter enters the hemispherical recess 10, centered about the axis of the housing 1. When the lowered depth gauge The device 6 reaches the spring core of the tubing and compression pipe, the annular flange 7 of the housing 1 sits on the support ring of the core, and the conical surface of the housing 1 sits between the spring strings of the cor. This moment fixes the length of the suspension of the tubing string. The descending depth gauge 16, continuing to descend, exits the hemispheric recess 10 of the body -1 and takes the necessary measurements, for example, the depth of the slab. After the measurements, the descentable depth gauge 6 is lifted on the wire 5. The depth gauge 6, reaching the spring core, rises and releases the body

1 and together with it rises to the wellhead.

The implementation of the body 1 in the form of a truncated cone with a hemispherical deepening in the bottom end makes it possible to eliminate the breakage of the wire 5 due to its hooking on the strap. The presence of holes 8 for the flow of fluid, located at a distance from the axis of the body, smaller than the radius of the lowered depth gauge 6, provides a reliable measurement of the height of the fluid level in the well. The presence of the collar 7 on the upper (wide, h) part of the conical housing I provides a reliable measurement of the spine of the suspension-column tubing. All features generally improve device reliability.

Ingenuity formula

A device for the study of downhole wells, which contains a depth device with a suspension wire and a housing with openings for passing the instrument suspension wire, characterized in that, in order to increase reliability, the housing is made in the form of a truncated housing with an annular collar in the upper part and has additional the holes for the well flow of fluid, remote from the axis of the body at a distance, are larger than the radius of the upper end of the descent device, and a hemispherical recess is made in the lower end of the body, It exceeds the diameter of the descent device.

Claims (1)

Claim A device for researching deep-pumping wells, comprising a downhole device with a suspension wire and openings for passage of the suspension wire of the device, characterized in that, in order to increase reliability, the housing is made in the form of a truncated housing with an annular collar in the upper part and has additional openings for the borehole fluid channel that are distant from the body axis are less than the radius of the upper end face of the descent device, and hemispherical deepening, the diameter of which prevypaet diameter reentry tool.