CN211950438U

CN211950438U - Automatic throttling manifold equipment for pressure-controlled drilling

Info

Publication number: CN211950438U
Application number: CN202020555502.1U
Authority: CN
Inventors: 张飞; 钟平; 詹良斌; 董胜; 王世桠; 邹利明
Original assignee: Suzhou Douson Drilling & Production Equipment Co ltd
Current assignee: Suzhou Dawson Drilling And Production Equipment Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-11-17
Anticipated expiration: 2030-04-15

Abstract

The utility model discloses an automatic throttle manifold equipment for pressure-controlled drilling, which is divided into three channels, wherein the intermediate channel consists of a union flange, an intermediate passage first gate valve, an intermediate passage five-way valve, an intermediate passage second gate valve, an intermediate passage second five-way valve, an intermediate passage third gate valve, a mass flow meter, an intermediate passage fourth gate valve, an intermediate passage three-way valve and an outlet union flange which are connected in sequence; the two side channels respectively consist of a manual-hydraulic linkage gate valve, a manual-hydraulic linkage throttle valve and a side gate valve which are connected in sequence; the side channel gate valves on the channels on the two sides are communicated with the middle channel second five-way on the middle channel through a side channel four-way and a flange pipe respectively; the electric control box and the hydraulic control box are respectively arranged on two sides of the middle channel of the manifold, the electric control box and the hydraulic control box are mutually coupled, and the electric control box, the hydraulic control box and the mass flow meter are mutually connected. By utilizing the equipment, the change of the formation pressure can be quickly coped with without adjusting the density of the drilling fluid, the reservoir is protected, and the damage is reduced.

Description

Automatic throttling manifold equipment for pressure-controlled drilling

Technical Field

The utility model relates to an oil drilling equipment technical field especially relates to an automatic throttle manifold equipment is used in accuse pressure drilling.

Background

Because the geological conditions of the drilling engineering are complex, underground accidents such as spraying, leakage, collapse, blocking, breaking and the like are easy to occur in the drilling process, however, most of the underground accidents are related to the relationship between the safe drilling fluid density window and the annular fluid column pressure. Therefore, the well drilling construction under the condition of the narrow density window is more difficult, and the pressure-controlled well drilling technology ensures that the pressure of an annular liquid column is in the safe density window by adjusting the back pressure of a wellhead in real time, so that the safe drilling of the narrow density window is realized.

The automatic choke manifold is the key equipment for realizing the pressure control drilling technology. The structure of the automatic throttle manifold for the current common pressure-controlled drilling is complex, and the reaction sensitivity needs to be further improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a accuse is automatic throttle manifold equipment for well drilling is pressed reduces the frequency that the complicated accident appears in the well drilling process, when appearing the complicated accident, can make the reply in the short time through control system, protects the reservoir, reduces the injury.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses an adopt following technical scheme to realize: an automatic throttling manifold device for pressure-controlled drilling is divided into three channels, wherein the middle channel consists of a union flange, a middle passage first gate valve, a middle passage five-way valve, a middle passage second gate valve, a middle passage second five-way valve, a middle passage third gate valve, a mass flowmeter, a middle passage fourth gate valve, a middle passage three-way valve and an outlet union flange which are connected in sequence; the two side channels respectively consist of a manual-hydraulic linkage gate valve, a manual-hydraulic linkage throttle valve and a side gate valve which are connected in sequence; the side channel gate valves on the channels on the two sides are communicated with the middle channel second five-way on the middle channel through a side channel four-way and a flange pipe respectively; the electric control box and the hydraulic control box are respectively arranged on two sides of the middle channel of the manifold, the electric control box and the hydraulic control box are mutually coupled, and the electric control box, the hydraulic control box and the mass flow meter are mutually connected.

Further, all components in the manifold are integrated into one closed skid.

Furthermore, gates around the skid-mounted door are detachably connected, and an upper cover plate of the skid-mounted door is detachable.

The utility model has the advantages that:

the utility model discloses an automatic throttle manifold equipment for pressure-controlled drilling, which is applied to the complex environment of drilling, can quickly deal with the change of formation pressure without adjusting the density of drilling fluid, protect the reservoir and reduce the damage;

the manifold equipment can reduce the drilling pressure, improve the drilling speed and reduce the number of the casing layers, thereby reducing the drilling cost;

the casing converging equipment has multiple control modes and is suitable for requirements of different drilling processes.

Drawings

FIG. 1 is a schematic top view of an automatic choke manifold apparatus for controlled pressure drilling;

FIG. 2 is a schematic front view of the intermediate channel;

the system comprises a 1-union flange, a 2-middle channel first gate valve, a 3-middle channel five-way valve, a 4-middle channel second gate valve, a 5-middle channel second five-way valve, a 6-middle channel third gate valve, a 7-mass flow meter, an 8-middle channel fourth gate valve, a 9-middle channel three-way valve, a 10-outlet union flange, an 11-manual-hydraulic linkage gate valve, a 12-manual-hydraulic linkage throttle valve, a 13-side channel gate valve, a 14-side channel four-way valve, a 15-electric cabinet and a 16-hydraulic control cabinet.

Detailed Description

The following description of the preferred embodiments of the present invention will be made in conjunction with the accompanying drawings 1-2, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly and clearly defined.

In order to improve the speed and the capability of the manifold equipment for dealing with the formation pressure change under the drilling working condition, effectively protect a reservoir and reduce the occurrence of accidents, the embodiment discloses automatic throttling manifold equipment for pressure-controlled drilling, which is divided into 3 channels, wherein each intermediate channel consists of a union flange 1, an intermediate passage first gate valve 2, an intermediate passage five-way 3, an intermediate passage second gate valve 4, an intermediate passage second five-way 5, an intermediate passage third gate valve 6, a mass flowmeter 7, an intermediate passage fourth gate valve 8, an intermediate passage three-way 9 and an outlet union flange 10 which are sequentially connected; a supplementary passage is also connected between the middle passage second five-way valve 5 and the middle passage three-way valve 9 through a middle passage fifth gate valve, two corner ways and a flange pipe; the two side channels respectively consist of a manual-hydraulic linkage gate valve 11, a manual-hydraulic linkage throttle valve 12 and a side gate valve 13 which are connected in sequence; the side gate valves 13 on the two side channels are communicated with the middle channel second five-way valve 5 on the middle channel through a side four-way valve 14 and a flange pipe respectively; electric cabinet 15 and liquid accuse case 16 are arranged respectively in the both sides of manifold intermediate channel, electric cabinet 15 and liquid accuse case 16 intercoupling, electric cabinet 15, liquid accuse case 16 and mass flow meter 7 interconnect, make the analysis through mass flow meter 7 to the change of shaft bottom liquid, feed back to electric cabinet 15, electric cabinet 15 makes corresponding reaction according to analysis result control liquid accuse case 16 and adjusts, the change of answering shaft bottom liquid, make shaft bottom pressure adjust to the setting value, thereby reach the purpose of protection reservoir.

All parts in the manifold equipment are integrated in a closed skid-mounted device, so that the equipment can be suitable for high-temperature outdoor environment, the skid-mounted device has a heat preservation function, and the equipment can also be suitable for low-temperature extremely cold environment.

The gates around the skid-mounted device are detachably connected, and the skid-mounted upper cover plate can be detached, so that convenience can be brought to maintenance and hoisting of the manifold.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automatic throttling manifold device for pressure-controlled drilling is characterized in that the manifold device is divided into three channels, and each middle channel consists of a union flange (1), a middle passage first gate valve (2), a middle passage five-way (3), a middle passage second gate valve (4), a middle passage second five-way (5), a middle passage third gate valve (6), a mass flow meter (7), a middle passage fourth gate valve (8), a middle passage three-way (9) and an outlet union flange (10) which are connected in sequence; the two side channels respectively consist of a manual-hydraulic linkage gate valve (11), a manual-hydraulic linkage throttle valve (12) and a side gate valve (13) which are connected in sequence; the side gate valves (13) on the channels on the two sides are communicated with the middle channel second five-way (5) on the middle channel through a side four-way (14) and a flange pipe respectively; electric cabinet (15) and liquid accuse case (16) are arranged respectively in the both sides of manifold intermediate channel, and electric cabinet (15) and liquid accuse case (16) intercoupling, electric cabinet (15), liquid accuse case (16) and mass flowmeter (7) interconnect.

2. An automatic choke manifold for controlled pressure drilling according to claim 1, wherein all components of the manifold are integrated in a closed skid.

3. The automatic choke manifold apparatus for controlled pressure drilling according to claim 2, wherein the skid-mounted peripheral gates are detachably connected, and the skid-mounted upper cover plate is detachable.