Compact continuous circulation control manifold
By designing a compact continuous cycle control manifold, including an input tee, an output tee, and two control lines, the problem of positional conflict between the continuous cycle control manifold and the throttling manifold was solved, reducing the difficulty of operation and the failure rate.
Patent Information
- Application Number
- CN202423194008.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-24
AI Technical Summary
The existing continuous circulation control manifold is bulky, which causes it to conflict with the location of the throttling manifold, increasing the difficulty of operation and the failure rate.
A compact continuous circulation control manifold was designed, comprising an input tee, an output tee, and two control lines, including a shut-off valve, a throttle valve, and a safety shut-off valve. The compact structure avoids conflicts with the throttle manifold, and the safety shut-off valve provides a shut-off function when the throttle valve fails, reducing the difficulty of operation.
The structure achieves a simple and compact continuous circulation process, avoiding conflicts with the throttling manifold and reducing the operational failure rate.
Smart Images
Figure CN223608494U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of drilling, more particularly to a compact continuous circulation control manifold. BACKGROUND
[0002] Continuous circulation drilling can continuously inject drilling circulating medium into the drill string through bypass pipeline to maintain constant drilling circulating discharge capacity and equivalent density, prevent well wall collapse, overflow, sand sticking and other accidents caused by stopping circulation when connecting or disconnecting single pipe or stand.
[0003] The continuous circulation control manifold is a main device for realizing pipeline switching. The existing continuous circulation control manifold has many passages and valves to meet various requirements, resulting in a large volume of the continuous circulation control manifold. Moreover, the continuous circulation control manifold is mostly installed on the left side of the derrick leg, which is prone to position conflict with the choke manifold.
[0004] In summary, how to avoid position conflict between the continuous circulation control manifold and the choke manifold is a problem to be solved by the technical personnel in the field. SUMMARY
[0005] Therefore, the utility model aims to provide a compact continuous circulation control manifold, which is simple and compact in structure, avoids conflict between the continuous circulation control manifold and the choke manifold, and reduces operation difficulty and failure rate.
[0006] To achieve the above purpose, the utility model provides the following technical scheme:
[0007] A compact continuous circulation control manifold comprises an input tee for connecting with a mud pump and an output tee for connecting with a continuous circulation standpipe, two control pipelines are arranged between the input tee and the output tee, the control pipelines comprise a stop valve for controlling pipeline on-off, a throttle valve for adjusting drilling fluid injection amount when connecting a standpipe or a single pipe, and a safety stop valve, the safety stop valve is arranged between the input tee and the throttle valve to play a stop role when the throttle valve fails to stop.
[0008] Preferably, the inlet of the safety stop valve is connected with the outlet of the input tee, the outlet of the safety stop valve is connected with the inlet of the throttle valve, the outlet of the throttle valve is connected with the inlet of the stop valve, and the outlet of the stop valve is connected with the inlet of the output tee.
[0009] Preferably, the outlet of the throttle valve is perpendicular to the inlet of the throttle valve, and the throttle valve is connected with the stop valve through a right-angle two-way valve to form a C-shaped structure of the control pipeline.
[0010] Preferably, the outlet axis of the safety stop valve is collinear with the outlet axis of the input tee, and the inlet axis of the stop valve is collinear with the inlet axis of the output tee.
[0011] Preferably, further comprising a shock-proof pressure gauge for detecting the pump pressure of the mud pump, and the shock-proof pressure gauge is arranged on the pressure tapping pipeline of the input tee.
[0012] Preferably, the pressure tapping pipeline is provided with a pressure tapping safety valve for controlling the opening and closing of the pipeline, and the pressure tapping safety valve comprises a cock valve.
[0013] Preferably, the inlet axis of the input tee is collinear with the outlet axis of the output tee, and the two control pipelines are symmetrically arranged on the left and right sides of the inlet axis of the input tee.
[0014] Preferably, the stop valve and the safety stop valve each comprise a manual flat valve.
[0015] Preferably, the input tee and the output tee are both threaded tees, the input tee is connected with the flange plate of the safety stop valve, and the output tee is connected with the flange plate of the stop valve.
[0016] Preferably, the flange plate of the throttle valve is connected with the flange plate of the safety stop valve through bolts.
[0017] The compact continuous circulation control manifold provided by the utility model is provided with two same control pipelines inside for injecting drilling fluid into a drill string, so as to realize a continuous circulation process, and the structure is simple and compact, the conflict between the continuous circulation control manifold and the throttle manifold is avoided, the operation difficulty is reduced, and the failure rate caused by personnel operation errors is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.
[0019] Fig. 1 It is a structural schematic view of the specific embodiment of the compact continuous circulation control manifold provided by the utility model.
[0020] Fig. 2 It is an assembly schematic view of the input tee and the shock-proof pressure gauge.
[0021] Figs. 1-2 In the middle:
[0022] 1 - input tee; 2 - safety shut-off valve; 3 - throttle valve; 4 - right-angle two-way; 5 - shut-off valve; 6 - output tee; 7 - shock-proof pressure gauge; 8 - pressure relief safety valve. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.
[0024] The core of the utility model provides a kind of compact continuous circulation control manifold, simple and compact structure avoids the conflict of continuous circulation control manifold and throttle manifold, and reduces the operation difficulty and operation failure rate.
[0025] The compact continuous circulation control manifold provided by the utility model includes input tee 1 for being connected with mud pump and output tee 6 for being connected with continuous circulation riser, and two-way control pipeline is equipped between input tee 1 and output tee 6, control pipeline includes shut-off valve 5 for controlling the on-off of pipeline, throttle valve 3 for adjusting drilling fluid injection amount when connecting riser or connecting single string and safety shut-off valve 2, and safety shut-off valve 2 is arranged between input tee 1 and throttle valve 3, to play the role of shut-off when throttle valve 3 fails to shut off.
[0026] Input tee 1 is connected with the valve group of mud pump, and output tee 6 is connected with hose line and drilling fluid filling device through continuous circulation riser;Flange connection or by n joint is usually used between input tee 1 and mud pump and between output tee 6 and continuous circulation riser, to ensure the sealing performance of inlet and outlet of continuous circulation control manifold.
[0027] Considering the actual working environment of continuous circulation control manifold, input tee 1 and output tee 6 are usually arranged as wire tee, input tee 1 is connected with the flange plate of safety shut-off valve 2, and output tee 6 is connected with the flange plate of shut-off valve 5.
[0028] Two-way control pipeline is arranged between input tee 1 and output tee 6, and both two-way control pipelines can inject drilling fluid into drill string to realize continuous circulation process;Control pipeline includes shut-off valve 5, throttle valve 3 and safety shut-off valve 2, wherein, shut-off valve 5 is used to control the on-off of pipeline, throttle valve 3 is used to adjust drilling fluid injection amount when connecting riser or connecting single string, and safety shut-off valve 2 is arranged between the outlet of input tee 1 and the inlet of throttle valve 3, to play the role of shut-off when throttle valve 3 fails to shut off.
[0029] The stop valve 5 can be arranged between the input tee 1 and the throttle valve 3, or arranged between the throttle valve 3 and the output tee 6, and preferably arranged between the throttle valve 3 and the output tee 6 considering the arrangement position of the safety stop valve 2.
[0030] Both the stop valve 5 and the safety stop valve 2 can control the opening and closing of the pipeline, and the specific type and model thereof can be determined according to the actual production needs, and preferably both the stop valve 5 and the safety stop valve 2 are manually operated flat valves, which have small flow resistance, convenient pigging, strong applicability and good sealing performance.
[0031] The type and model of the throttle valve 3 can also be determined according to the actual production needs, as long as it has the characteristics of complete closing, long-term stopping and large diameter after complete opening, so as to avoid the continuous circulation requirement of the continuous circulation control manifold.
[0032] During the drilling process, the continuous circulation control manifold is connected in advance between the mud pump and the drilling fluid injection device, the input tee 1 is connected with the mud pump, the output tee 6 is connected with the drilling fluid injection device through the continuous circulation riser, and the throttle valve 3 and the safety stop valve 2 of the two-way control pipeline are kept open, the stop valve 5 of one-way control pipeline is kept open, and the stop valve 5 of the other way control pipeline is kept closed, so that one-way control pipeline is in closed state and the other way control pipeline is in open state.
[0033] During the conventional drilling, the gate group of the mud pump is in the conventional opening and closing state, and the drilling fluid is directly injected into the drill pipe through the standpipe through the swivel.
[0034] When the stand or the single rod is connected or disconnected, it is necessary to adjust the opening and closing state of the gate group of the mud pump to enter the continuous circulation drilling process, the drilling fluid enters the continuous circulation control manifold through the input tee 1, and flows to the output tee 6 through the one-way control pipeline, and then flows into the drilling fluid injection device through the output tee 6, and then the bypass passage of the continuous circulation valve assembly of the continuous circulation system is connected, so that the drilling fluid is injected into the drill pipe through the bypass passage to realize continuous circulation drilling.
[0035] In the embodiment, two identical control pipelines are arranged in the compact continuous circulation control manifold to inject drilling fluid into the drill string to realize the continuous circulation process, which has simple and compact structure, avoids the conflict between the continuous circulation control manifold and the throttle manifold, reduces the operation difficulty, and effectively reduces the failure rate caused by personnel operation error.
[0036] Preferably, in order to facilitate the detection of the circulation pressure, an anti-shock pressure gauge 7 for detecting the pump pressure of the mud pump can also be arranged, and the anti-shock pressure gauge 7 is arranged on the pressure taking pipeline of the input tee 1, as shown in Fig. 2
[0037] The specific model, type and installation mode of the shockproof pressure gauge 7, and the like, are determined according to the requirements in actual production, such as the pressure range and the pressure measurement accuracy of the mud pump pressure.
[0038] In order to avoid mutual interference of the shockproof pressure gauge 7 and the input tee 1 in case of failure, the pressure tapping pipeline is preferably provided with a pressure tapping safety valve 8 for controlling the opening and closing of the pipeline, and the pressure tapping safety valve 8 is usually set as a manual stop valve such as a cock valve, so as to disconnect the pressure tapping pipeline in case of failure of the shockproof pressure gauge 7 or the input tee 1.
[0039] On the basis of the above embodiment, the structure of the control pipeline is limited, the inlet of the safety stop valve 2 is connected with the outlet of the input tee 1, the outlet of the safety stop valve 2 is connected with the inlet of the throttle valve 3, the outlet of the throttle valve 3 is connected with the inlet of the stop valve 5, and the outlet of the stop valve 5 is connected with the inlet of the output tee 6.
[0040] It should be noted that the above connection not only includes direct connection through flange connection and bolt connection, but also includes valve connection through connecting pipe, for example, the flange plate of the throttle valve 3 is connected with the flange plate of the safety stop valve 2 through bolt connection, and the throttle valve 3 is connected with the stop valve 5 through the elbow or the right-angle two-way pipe 4.
[0041] Considering that two control pipelines are provided between the input tee 1 and the output tee 6, in order to facilitate the distribution of the control pipeline, the input tee 1 and the output tee 6 are usually arranged at different heights, and on this basis, in order to shorten the height of the control pipeline, the outlet of the throttle valve 3 is usually arranged vertically to the inlet of the throttle valve 3, the throttle valve 3 is connected with the stop valve 5 through the right-angle two-way pipe 4, so that the control pipeline forms a C-shaped structure, and the structure of the control pipeline is more compact, so as to save the required installation space.
[0042] In order to shorten the width of the control pipeline, the outlet axis of the safety stop valve 2 is usually arranged in line with the outlet axis of the input tee 1, and the inlet axis of the stop valve 5 is arranged in line with the inlet axis of the output tee 6, so as to avoid that the safety stop valve 2 is arranged obliquely relative to the outlet axis of the input tee 1, or the stop valve 5 is arranged obliquely relative to the inlet axis of the output tee 6, resulting in the increase of the occupied space of the control pipeline.
[0043] The shape and size of the two control pipelines can be the same or different, but in order to make the continuous circulation control pipeline more compact and reduce the occupied space, the inlet axis of the input tee 1 is preferably arranged in line with the outlet axis of the output tee 6, and the two control pipelines are symmetrically arranged on the left and right sides of the inlet axis of the input tee 1.
[0044] For example, in a specific embodiment, please refer to Fig. 1The left control pipeline and the right control pipeline are symmetrically arranged between the input tee 1 and the output tee 6, and the left control pipeline and the right control pipeline are sequentially provided with the safety stop valve 2, the throttle valve 3, the right-angle two-way pipe 4 and the stop valve 5 along the flow direction of the drilling fluid, wherein the safety stop valve 2 and the stop valve 5 are both manual flat valves;
[0045] The input tee 1 and the output tee 6 are both threaded tees, the right-angle two-way pipe 4 is a threaded two-way pipe, the outlet of the input tee 1 is connected with the flange plate of the inlet of the safety stop valve 2 through a stud, the flange plate of the outlet of the safety stop valve 2 is connected with the flange plate of the inlet of the throttle valve 3 through a bolt, the flange plate of the outlet of the throttle valve 3 is connected with the inlet of the right-angle two-way pipe 4 through a stud, the outlet of the right-angle two-way pipe 4 is connected with the flange plate of the inlet of the stop valve 5 through a stud, and the flange plate of the stop valve 5 is connected with the inlet of the output tee 6 through a stud.
[0046] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between various embodiments can be referred to each other.
[0047] The compact continuous circulation control manifold is described in detail above. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the description of the above embodiments is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled persons in the technical field, the utility model can be improved and modified on the premise of not deviating from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claim.
Claims
1. A compact continuous circulation control manifold characterized by, The application relates to a drilling fluid injection control device, which comprises an input tee joint (1) for connecting with a mud pump and an output tee joint (6) for connecting with a continuous circulation riser, two control pipelines are arranged between the input tee joint (1) and the output tee joint (6), the control pipelines comprise a stop valve (5) for controlling pipeline on-off, a throttle valve (3) for adjusting drilling fluid injection amount when a riser or a single pipe is connected, and a safety stop valve (2) arranged between the input tee joint (1) and the throttle valve (3) to play a stop role when the throttle valve (3) fails to stop.
2. The compact continuous circulation control manifold of claim 1, wherein, The inlet of the safety stop valve (2) is connected with the outlet of the input tee joint (1), the outlet of the safety stop valve (2) is connected with the inlet of the throttle valve (3), the outlet of the throttle valve (3) is connected with the inlet of the stop valve (5), and the outlet of the stop valve (5) is connected with the inlet of the output tee joint (6).
3. The compact continuous circulation control manifold of claim 2, wherein, The outlet of the throttle valve (3) is perpendicular to the inlet of the throttle valve (3), the throttle valve (3) is connected with the stop valve (5) through a right-angle two-way joint (4), so that the control pipeline forms a C-shaped structure.
4. The compact continuous circulation control manifold of claim 3, wherein, The outlet axis of the safety stop valve (2) is collinear with the outlet axis of the input tee joint (1), and the inlet axis of the stop valve (5) is collinear with the inlet axis of the output tee joint (6).
5. The compact continuous circulation control manifold according to any one of claims 1-4, wherein, An anti-shock pressure gauge (7) for detecting pump pressure of the mud pump is further arranged on a pressure taking pipeline of the input tee joint (1).
6. The compact continuous circulation control manifold of claim 5, wherein, The pressure taking pipeline is provided with a pressure taking safety valve (8) for controlling pipeline on-off, and the pressure taking safety valve (8) comprises a cock valve.
7. The compact continuous circulation control manifold according to any one of claims 1-4, wherein, The inlet axis of the input tee joint (1) is collinear with the outlet axis of the output tee joint (6), and the two control pipelines are symmetrically arranged on the left and right sides of the inlet axis of the input tee joint (1).
8. The compact continuous circulation control manifold of claim 7, wherein, The stop valve (5) and the safety stop valve (2) both comprise a manual flat valve.
9. The compact continuous circulation control manifold of claim 7, wherein, The input tee joint (1) and the output tee joint (6) are both wire tee joints, the input tee joint (1) is connected with a flange plate of the safety stop valve (2), and the output tee joint (6) is connected with a flange plate of the stop valve (5).
10. The compact continuous circulation control manifold of claim 7, wherein, The flange plate of the throttle valve (3) is connected with the flange plate of the safety stop valve (2) through bolts.