Totally-closed liquid-collecting measuring top sheave for swabbing

Abstract

The utility model discloses a full-closed sky sheave capable of collecting liquid and measuring for swabbing. The sky sheave comprises a closed shell and a rotating wheel assembly integrated in the closed shell. The bottom of the closed shell is provided with three channels communicated with the outside, two of the three channels are used for the steel wire rope to penetrate through, and the other channel is communicated with an external sewage collecting device; a speed sensor is installed at the end of a rotating wheel shaft of the rotating wheel assembly and used for detecting the rotating speed of a rotating wheel and the rotating wheel shaft of the rotating wheel assembly. According to the top sheave, the valve sealing and liquid collecting functions are achieved through the closed shell, and produced liquid in a well is guided into the sewage collecting tank through the channel, so that normal operation of the front sheave is not affected. A speed sensor mounted at the end of the rotating wheel shaft is used for recording the rotating speed and the number of rotating turns of the top sheave, and the rotating speed and the number of turns are stored through a PLC, so that the depth of the steel wire rope entering the well and the position of the puller are calculated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil exploitation, especially relates to a full-closed liquid collecting and measuring sky pulley suitable for swabbing in the process of oil exploitation. BACKGROUND

[0002] In the process of oil exploitation, the well logging cable is mainly hoisted by the sky pulley of the travelling trolley and the ground pulley fixed at the well head. Among them, the sky pulley in the prior art usually does not have the functions of liquid collecting and guiding, and the sky pulley in the prior art cannot obtain the straight travel distance of the swab in the well, the depth in the well and the moving depth in addition to the cable guiding function.

[0003] Therefore, based on the above technical problems, the technical personnel in the art urgently need to develop a full-closed liquid collecting and measuring sky pulley suitable for swabbing in the process of oil exploitation. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of full-closed liquid collecting and measuring sky pulley for swabbing, which provides a closed cavity capable of liquid collection and a passage for guiding liquid to a sewage collection tank for cable working environment;And the rotational speed of the runner shaft is detected by the speed sensor, so that the straight travel distance of the swab in the well, the depth in the well and the moving depth are obtained according to the cumulative number of turns of the sky pulley.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of full-closed liquid collecting and measuring sky pulley for swabbing of the utility model, the sky pulley includes:

[0007] Closed shell body;And

[0008] Runner assembly integrated in the inside of the closed shell body;

[0009] The bottom of the closed shell body has three passages in communication with the outside, and two of the passages are used for steel wire rope to pass through, and the other passage is in communication with the outside sewage collection device;

[0010] The speed sensor is installed at the end of the runner shaft of the runner assembly, and the speed sensor is used to detect the rotational speed of the runner and the runner shaft of the runner assembly.

[0011] Further, the closed shell body includes:

[0012] Closed shell;And

[0013] Two side end covers fixedly assembled with the closed shell;

[0014] The closed shell and the two end covers are assembled and fixed by a mounting member, and the connection between the closed shell and the end covers is sealed by a sealing structure.

[0015] Further, the runner assembly comprises:

[0016] a runner; and

[0017] a runner mounting plate for integrating the runner, a runner shaft being mounted at a middle position of the runner mounting plate, and the runner shaft being rotatably connected to the runner mounting plates at both ends thereof by a rotating member;

[0018] The end portion of the runner shaft penetrates through the end cover and extends to the outside of the end cover.

[0019] Further, the runner mounting plate is configured as an elongated structure with a middle portion having a greater width than both end portions.

[0020] The length of the runner mounting plate is greater than the length of the closed shell, and the upper end portion of the runner mounting plate extends to the outside of the closed shell.

[0021] Further, a sky pulley suspension rod is mounted at the upper end of the two runner mounting plates.

[0022] The lower ends of the two runner mounting plates are connected by a connecting rod.

[0023] Further, the three channels are divided into steel wire rope closed channels located at both sides, and a produced liquid return liquid channel located between the two steel wire rope closed channels.

[0024] The produced liquid return liquid channel is in communication with a sewage collection tank at a downstream end.

[0025] Further, the channels comprise:

[0026] a pipeline in communication with the closed shell; and

[0027] a pipeline connecting member mounted at the end of the pipeline.

[0028] In the above technical solution, the utility model provides a kind of full-closed liquid collection measurement sky pulley for swabbing, with the following beneficial effects:

[0029] The utility model discloses a sky pulley, which forms a valve liquid collection function through a closed shell, uses a channel to guide produced liquid in a well into a sewage collection tank for communication without affecting the normal operation of a front pulley. A speed sensor mounted at the end of a runner shaft is used to record the rotation speed and the number of revolutions of the sky pulley, and the rotation speed and the number of revolutions are saved by PLC, so as to calculate the depth of a steel wire rope into a well and the position of a swab. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to make the technical scheme of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0031] Fig. 1 A structure diagram of a full-closed liquid collection and measurement overhead sheave for swabbing disclosed by the embodiments of the present application is shown in the figure.

[0032] Fig. 2 A structure diagram of the inside of a full-closed liquid collection and measurement overhead sheave for swabbing disclosed by the embodiments of the present application is shown in the figure.

[0033] Explanation of reference signs:

[0034] 1, closed shell; 2, runner assembly; 3, passage;

[0035] 101, closed shell; 102, end cover;

[0036] 201, runner; 202, runner mounting plate; 203, overhead sheave suspension rod; 204, connecting rod; 205, speed sensor;

[0037] 301, steel wire rope closed passage; 302, produced liquid return liquid passage. DETAILED DESCRIPTION

[0038] In order to make the technical scheme of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0039] Referring to Figs. 1-2 shown;

[0040] The embodiments disclose a full-closed liquid collection and measurement overhead sheave for swabbing, which comprises:

[0041] A closed shell 1; and

[0042] A runner assembly 2 integrated in the inside of the closed shell 1;

[0043] The bottom of the closed shell 1 has three passages 3 in communication with the outside, and two of the passages are used for the steel wire rope to pass through, and the other passage 3 is in communication with the outside sewage collection device;

[0044] A speed sensor 205 is mounted at the end of the runner shaft of the runner assembly 2, and the speed sensor 205 is used to detect the rotating speed of the runner 201 and the runner shaft of the runner assembly.

[0045] Specifically, the head pulley of the embodiment comprises a closed shell 1 and a runner assembly 2, wherein the closed shell 1 is driven by the movement of the wire rope to bring part of the liquid into the closed shell 1, and the closed shell 1 of the embodiment is provided with three passages 3 at the lower part, two of which are used as the passages 3 of the wire rope, and the remaining one is used as the passage 3 of the returned liquid, and of course, the three passages 3 can all be used as the passage of the returned liquid in actual use. In addition, in order to accurately obtain the straight-line speed of the suction rod running in the well, the speed sensor 205 is arranged at the end of the runner shaft of the runner assembly 2, and the number of revolutions and the speed of the runner 201 are detected by using the speed sensor 205. Since the circumference of the head pulley is a constant value, the depth of the wire rope into the well and the position of the suction rod can be calculated by the measured speed and the number of revolutions.

[0046] Preferably, the closed shell 1 of the embodiment comprises a closed shell 101 and two side end covers 102 fixedly assembled with the closed shell 101.

[0047] The closed shell 101 and the two end covers 102 are fixedly assembled by the mounting member, and the connection between the closed shell 101 and the end cover 102 is sealed by the sealing structure. In order to form the closed shell 1, the end cover 102 is arranged at both ends of the closed shell 101 in the embodiment, and the mounting member can be a fastener such as a bolt, or any structure capable of maintaining the mounting position of the end cover 102. At the same time, the sealing structure of the closed shell 101 and the end cover 102 can be a sealing member such as a rubber strip.

[0048] Preferably, the runner assembly 2 of the embodiment comprises a runner 201 and a runner mounting plate 202 for integrating the runner 201, and the runner shaft is mounted at the middle position of the runner mounting plate 202, and the runner shaft is rotationally connected to the runner mounting plate 202 at both ends thereof by the rotating member.

[0049] The end part of the runner shaft penetrates through the end cover 102 and extends to the outside of the end cover 102.

[0050] In the embodiment, the runner mounting plate 202 is configured as a long strip structure with the middle part having a greater width than the two end parts, the length of the runner mounting plate 202 is greater than the length of the closed shell 1, and the upper end part of the runner mounting plate 202 extends to the outside of the closed shell 1.

[0051] Based on the structure of the runner mounting plate 202, the upper end of the two runner mounting plates 202 of the embodiment is provided with a head pulley suspension rod 203, and the lower ends of the two runner mounting plates 202 are connected by the connecting rod 204.

[0052] Preferably, the three channels 3 of the embodiment are divided into steel wire rope closed channels 301 located on both sides, and a produced liquid return liquid channel 302 located between the two steel wire rope closed channels 301; the produced liquid return liquid channel 302 is communicated with a sewage collection tank at the downstream end of the process.

[0053] The head pulley of the embodiment adjusts the running speed of the sucker according to the proportion of water in the well fluid, that is, if the proportion of water in the well fluid is relatively large and the leakage amount is large, the rotational speed value can be increased for reference to prevent the proportion of water in the well fluid from being relatively large, and if the proportion of crude oil in the well fluid is large and the leakage amount is small, the rotational speed can be slowed down for reference to prevent the steel wire rope from being broken due to the large viscosity of the crude oil.

[0054] The embodiment can obtain the straight travel distance of the sucker in the well, the depth of the sucker in the well and the moving depth of the sucker in the well by cumulatively calculating the number of revolutions of the head pulley, and in the case of a known liquid surface, the sinking depth of the sucker under the liquid surface can be known, so that the sinking depth of the sucker can be accurately controlled.

[0055] If the proportion of water in the well fluid is relatively large, the surface tension of water is small, the flowability is good, and there is almost no viscosity, and the leakage amount between the sucker and the wellbore is large, the sucker needs to be pulled up at a relatively fast speed;

[0056] If the proportion of water in the well fluid is relatively small, the proportion of crude oil is relatively large, the surface tension of crude oil is large, the viscosity is high, the flowability is poor, the leakage amount is small, and the resistance to lifting of crude oil is large, in order to avoid the steel wire rope from being broken due to too large resistance caused by fast lifting speed, the lifting speed is considered to be reduced.

[0057] The middle channel of the three channels 3 of the embodiment is directly communicated with the sewage collection tank, and the channels on both sides are used as the closed channels 301 for pumping and bailing the steel wire rope, and the lower ends of the channels are connected with the lower three-stage sealing device for pumping and bailing.

[0058] In the above technical solution, the full-closed liquid collecting and measuring head pulley for pumping and bailing has the following beneficial effects:

[0059] The head pulley of the utility model forms a valve liquid collecting function through the closed shell 1, uses the channel 3 to guide the produced liquid in the well into the sewage collection tank to communicate without affecting the normal operation of the front pulley. And the speed sensor 205 installed at the end of the rotating shaft records the rotational speed and the number of revolutions of the head pulley, and the PLC saves the rotational speed and the number of revolutions, so as to calculate the depth of the steel wire rope into the well and the position of the sucker.

[0060] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A full-closed liquid collectable measuring crown block for swabbing, characterized in that, The overhead sheave comprises: a closed casing (1); and a runner assembly (2) integrated inside the closed casing (1); the bottom of the closed casing (1) has three passages (3) in communication with the outside, two of which are used for wire rope to pass through, and the other is in communication with the outside sewage collection device; the speed sensor (205) is installed at the end of the runner shaft of the runner assembly (2), which is used to detect the rotating speed of the runner (201) and the runner shaft of the runner assembly (2).

2. A totally enclosed liquid collecting gauge sheave for pumping according to claim 1, characterized in that, The closed casing (1) comprises: a closed casing (101); and two side end covers (102) fixedly assembled with the closed casing (101); the closed casing (101) and the two end covers (102) are fixedly assembled by a mounting member, and the connection between the closed casing (101) and the end cover (102) is sealed by a sealing structure.

3. A totally enclosed liquid collecting gauge head pulley for swabbing operations as claimed in claim 2 wherein, The runner assembly (2) comprises: a runner (201); and a runner mounting plate (202) for integrating the runner (201), the middle position of the runner mounting plate (202) is provided with a runner shaft, and the runner shaft is rotationally connected with the runner mounting plates (202) at both ends thereof through a rotating member; the end portion of the runner shaft passes through the end cover (102) and extends to the outside of the end cover (102).

4. A totally enclosed liquid collecting gauge head pulley for swabbing operations as claimed in claim 3 wherein, The runner mounting plate (202) is configured as a long strip structure with a middle portion width greater than the width of both end portions; the length of the runner mounting plate (202) is greater than the length of the closed casing (1), and the upper end portion of the runner mounting plate (202) extends to the outside of the closed casing (1).

5. A totally enclosed liquid collecting gauge head pulley for swabbing operations as defined in claim 4 wherein, The upper end of the two runner mounting plates (202) is provided with an overhead sheave suspension rod (203); the lower ends of the two runner mounting plates (202) are connected by a connecting rod (204).

6. A totally enclosed liquid collecting gauge head pulley for swabbing operations as defined in claim 2 wherein, The three passages (3) are divided into wire rope closed passages (301) located at both sides, and a produced liquid return liquid passage (302) located between the two wire rope closed passages (301); the produced liquid return liquid passage (302) is in communication with the sewage collection tank at the downstream end of the process.

7. A totally enclosed liquid collecting gauge head pulley for swabbing operations as claimed in claim 6 wherein, The passage comprises: a pipeline in communication with the closed casing (101); and a pipeline connecting member installed at the end of the pipeline.

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