KR20150004571A - BOP Test Apparatus and Method - Google Patents

Abstract

The present invention relates to a BOP test apparatus and method, in which a test well head is mounted on a separate fixed base, and then the BOP equipment is latched to the test well head at the bottom of the sea floor while the fixed base is fixed to the bottom of the sea floor , The landing test for the BOP equipment can be performed in water similar to the actual environment and the test operation can be carried out stably and accurately irrespective of the change of the sea condition and the fixed base and the test well head By installing it on the bottom of the sea floor, and then using the riser to latch the BOP equipment to the test wellhead, it is possible to carry out the test work on the BOP equipment by using one drill ship without additional additional work line. Provide BOP test devices and methods that can perform test operations quickly do.

Description

[0001] BOP TEST APPARATUS AND METHOD [0002]

The present invention relates to a BOP test apparatus and method. More specifically, a landing test for the BOP equipment can be performed by allowing the BOP equipment to be latched to the test well head at the bottom of the sea bed with the fixation base fixed to the bottom of the sea after mounting the test wellhead on a separate fixed base It can be performed in water similar to the actual environment, and it can perform stable and accurate test work irrespective of the change of the sea condition. The fixed base and the test well head are installed on the bottom of the seabed using the riser of the drill ship, By latching the BOP equipment to the test wellhead using the riser, it is possible to carry out the test work on the BOP equipment by using one drill ship without additional additional work line, And more particularly, to a BOP test apparatus and method.

As the international phenomenon of industrialization and industry develops, the use of resources such as petroleum is gradually increasing, and thus the stable production and supply of oil is becoming a very important issue on a global scale.

For this reason, the development of the marginal field or deep-sea oil field, which had been neglected due to economic difficulties, has become economic in recent years. Therefore, along with the development of seabed mining technology, drilling rigs with drilling facilities suitable for the development of such oilfields have been developed.

Conventional submarine drilling has been mainly used as a fixed platform for drilling at one point in the offshore area. Recently, floating drilling facility capable of drilling in depths of 3,000m or more has been developed and used for deep sea drilling.

These drilling facilities are equipped with various drilling equipments such as derrick system, riser, drill string and so on to drill oil and gas existing under the sea floor.

In recent years, the development of deep-sea oil fields has been actively promoted, so safety of various drilling equipments is especially important. Among the drilling equipments, the most relevant equipment for drilling is BOP (Blow out Preventer, Prevention device).

BOP equipment is installed to prevent the gas explosion of submarine wells by safely removing high pressure gas generated during drilling process and connected to the upper wellhead of submarine oil well through a riser from marine drilling facility .

These BOP equipment is designed to withstand deep sea conditions and withstand pressures up to 15,000 psi in high pressure environments above 3,000 m (4,300 psi) depth. However, since the test is not performed in the actual environment until it is installed in the actual deep water well, various problems arise in actual installation work.

Generally, the test for the BOP equipment is partially tested by applying external pressure or internal pressure separately to each part constituting the BOP equipment, and there is no device capable of performing such a test in the fully assembled state As a state, there is a desperate need for a device capable of performing various types of testing under the same conditions as the actual environment.

Korean Patent No. 10-1185286

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art, and it is an object of the present invention to provide a test well in a fixed base, By latching on the head, the landing test for the BOP equipment can be performed in water similar to the real environment to obtain more accurate test results, and the test well head can be more firmly fixed to the bottom of the sea floor through the fixed base And to provide a BOP test apparatus and method capable of performing a stable and accurate test operation irrespective of changes in the sea conditions.

It is a further object of the present invention to provide a method and apparatus for testing an additional required work line by installing a stationary base and a test wellhead at the bottom of the sea bed using a riser of a drill rig, and then latching the BOP equipment to the test wellhead using the riser again. It is possible to carry out a test operation on a BOP equipment by using a single drill ship without using a drill bit, and to provide a BOP test apparatus and method which can perform a test operation more conveniently and quickly.

The present invention relates to a BOP test apparatus for testing a BOP equipment, comprising: a stationary base formed to be fixedly installed on a bottom of a seabed; And a test well head module fixedly mounted on the fixed base so as to be able to latch the BOP equipment, the test well module being coupled to a lower end of a riser extending downward from a separate drill string, The test well head module and the fixing base are moved downward together with the riser and installed on the floor of the seabed, and the test of the BOP equipment is performed in water.

At this time, a separate well head connector may be mounted on the lower end of the riser to detachably connect to the test well head module.

Further, another air buoyant body may be detachably coupled to the fixed base.

An additional buoyancy body lug may be mounted on the fixed base, and the air buoyancy body may be equipped with an electrically operated buoyancy body hook that is electrically actuated to be coupled to the buoyancy body lug.

In addition, a signal cable extending from the drill rig and a connector socket connected to the signal cable are mounted on the riser, and a separate cable connector is mounted on the electric buoyancy hook so that the electric buoyancy hook can be operated. It can be connected to a socket.

The fixed base is connected to an up / down winch mounted on a floating platform to be supported on the sea of the installation area, and the riser extends downward from the drill rig, May be latched to the module.

In addition, two floating platforms may be provided, and the up / down winch mounted on each floating platform may be connected to both sides of the fixed base to support the fixed base in the sea.

In addition, the fixed base may be conveyed to the floating platform via a separate auxiliary barge.

Further, an electric winch hook electrically operated to be coupled to the fixed base is mounted on a wire end of the up / down winch, a separate signal cable is connected to the electric winch hook to operate the electric winch hook, The signal cable can be wound together with the wire on the winch drum of the up / down winch.

Further, the riser is separated from the test wellhead module and moved upward to the drill string after the fixation base and the test well head module are installed on the bottom of the sea floor, and the BOP equipment is operated after the riser is moved upward And may be coupled to the lower end of the riser and moved down with the riser to be latched to the test well head module.

The test well head module may also be configured to allow the mud fluids supplied to the test well head module from the drill ship to circulate in the test well head module and back through the bop equipment and riser back to the drill rig have.

The test well head module may include a main case mounted on the fixing base to form a mud liquid circulation chamber therein; A test well head in which a well head bore is formed so as to communicate with both the BOP bore of the BOP equipment and the mud liquid circulation chamber, the test well being disposed at an upper end of the main case so that the BOP equipment is latched on an upper portion thereof; And a well casing mounted on a lower portion of the test well head to be disposed inside the mud liquid circulation chamber and having a mud liquid discharge hole formed on one side thereof so that an internal space communicates with the mud liquid circulation chamber.

In addition, the drill rig can be applied as a semi-rigid line.

According to another aspect of the present invention, there is provided a BOP testing method for testing a BOP equipment, comprising the steps of: (a) fixing a test well head module formed to latch the BOP equipment to a separate fixed base; (b) coupling a test well head module fixedly mounted on the fixed base to a riser extending downward from a separate drill string, moving the same downward along with the riser, and fixing the test well module on the bottom of the sea floor; And (c) latching and latching the BOP equipment down to a test wellhead module located at the bottom of the seabed with the stationary base, wherein the BOP equipment is tested in water. ≪ / RTI >

The step (b) includes the steps of: (b-1) supporting the fixed base on the sea of the installation area by connecting the up / down winch mounted on a separate floating platform to the fixed base; (b-2) extending the riser downward from the drill rig to the test well module; (b-3) separating the upward / downward winch from the fixed base; And (b-4) lowering the fixed base and the test well module together with the riser while fixing the test well module to the lower end of the riser, and fixing the fixed base and the test well module to the floor of the underside.

In the step (b-1), the fixing base is mounted on a separate auxiliary barge and transferred to an installation area; Connecting a lifting winch of the floating platform to the fixed base; And moving the auxiliary barbine separately from the fixed base while the fixed base is connected to the up / down winch.

The step of connecting the lifting winch of the floating platform to the fixed base may include the steps of providing two floating platforms and connecting the lifting winch mounted on each floating platform to both sides of the fixed base respectively . ≪ / RTI >

In addition, it is possible to perform a step of joining a separate air buoyancy body to the stationary base before moving the stationary base and the test well head module together with the riser.

Also, after the fixed base and the test well head module are moved down together with the riser, the air buoyancy body may be separated from and removed from the fixed base.

In addition, an additional buoyancy body lug is mounted on the fixed base, an electrically buoyant body hook is mounted on the air buoyancy body so as to be coupled to the buoyancy body lug, and the riser is provided with a signal A cable and a connector socket connected to the signal cable are mounted and a separate cable connector is attached to the electric buoyancy hook so that the electric buoyancy hook can be connected to the connector socket.

The step (b) includes separating the riser from the test well module and recovering the riser to the drill string after the fixed base and the test well module are installed on the bottom of the sea floor, wherein (c ) May be performed in such a manner that the BOP equipment is connected to the lower end of the riser and moves down with the riser and is latched to the test well module after the riser is recovered upward by the drill bit.

The test well head module may also be configured such that the mud fluids supplied to the test well head module from the drill ship are circulated in the test well head module and are again connected to the drill bit via the BOP equipment and the riser coupled to the test well head module, And the mud liquid may be supplied to the test well head module to perform a circulating mud liquid test for the BOP equipment.

In addition, the drill rig can be applied as a semi-rigid line.

According to the present invention, the BOP equipment can be latched to the test well head at the bottom of the sea floor with the fixed base fixed to the floor of the sea after mounting the test well head on a separate fixed base, Can be performed in water similar to the actual environment to obtain more accurate test results and the test well head can be more firmly fixed to the bottom of the sea through the fixed base to ensure stable and accurate test work regardless of changes in the sea conditions. There is an effect that can be performed.

Also, by using the riser of the drill rig to install the fixed base and the test well head on the bottom of the seabed and then using the riser to latch the BOP equipment to the test wellhead, one drill ship It is possible to carry out the test work on the BOP equipment, so that it is possible to carry out the test work more conveniently and quickly.

FIG. 1 schematically shows a test structure of a BOP test apparatus according to an embodiment of the present invention. FIG.
FIG. 2 is a conceptual diagram schematically showing a configuration of a fixed base and a test well head module of a BOP test apparatus according to an embodiment of the present invention;
3 is a conceptual diagram schematically showing a structure of a mud liquid circulating through a test well head module according to an embodiment of the present invention,
4 is a view schematically showing an installation structure of a BOP test apparatus according to an embodiment of the present invention,
5 is a schematic view illustrating the structure of a fixed base and an air buoyant body according to an embodiment of the present invention.
6 to 13 are conceptual diagrams schematically illustrating a process of testing a BOP equipment using a BOP test apparatus according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a view schematically showing a test structure of a BOP test apparatus according to an embodiment of the present invention. FIG. 2 is a view showing a configuration of a fixed base and a test well head module of a BOP test apparatus according to an embodiment of the present invention. FIG. 3 is a conceptual diagram schematically showing a structure of a mud liquid circulating through a test wellhead module according to an embodiment of the present invention. Referring to FIG.

The BOP test apparatus according to an embodiment of the present invention is a device capable of performing various types of tests by exposing BOP equipment used in a deep sea environment to environmental conditions similar to deep sea environment, And a test well head module 300 fixedly mounted on the fixed base 800 so that the BOP equipment 200 can be latched. The test well head module 300 fixed to the fixed base 800 is coupled to the lower end of the riser 220 extending downward from the separate drill string 210 and is connected to the test well module 300 and the fixed base 800 are lowered together with the riser 220 and installed on the floor of the seabed.

That is, the test well head module 300, to which the BOP equipment 200 is latched, is fixedly mounted on a separate fixed base 800 and fixed with the fixed base 800 on the bottom of the sea floor. At this time, the test well head module 300 is coupled to the lower end of the riser 220 and can move down with the riser 220 to the bottom of the seabed.

In this state, the BOP equipment 200 is connected to the lower end of the riser 220 of the drill string 210 and the BOP equipment 200 is moved downward together with the riser 220, (Not shown). In this latching process, a landing test for the test well head module 300 of the BOP device 200 can be performed.

The stationary base 800 includes a base body 810 formed in the form of a concrete block and having a test well head module 300 mounted at its center and a reinforcing member 820 disposed inside the base body 810 . The reinforcing member 820 may be applied to a plurality of beam shapes, for example, an H beam. As shown in FIG. 2, a plurality of beam shapes may be arranged to be orthogonal to each other. The fixing base 800 may be manufactured in such a manner that the reinforcing member 820 is disposed inside a separate mold, and the concrete is filled in the mold to cure the mold. On the other hand, a lifting lug 801 which can be connected to the lifting winch W of the floating platform 700 to be described later can be mounted on the edge of the fixed base 800. The lifting lug 801 may be mounted such that one end thereof is coupled to the reinforcing member 820 and positioned inside the base body 810 and the other end is exposed to the outside from the base body 810.

Since the fixing base 800 has a reinforcing member 820 made of a steel material inserted into the base body 810 in the form of a concrete block, the strength of the fixing base 800 can be enhanced, You can do the work.

A plurality of suction jackets 830 may be mounted on the bottom surface of the fixing base 800 so that the fixing base 800 can be fixed to the floor of the seabed. As shown in the figure, a plurality of the lower end surface of the stationary base 800 may be mounted apart from each other along the center and the periphery. The suction jacket 830 disposed at the center of the lower end surface of the fixed base 800 may be provided at a position corresponding to the maximum load by the self weight of the BOP equipment 200 and the self weight of the test well head module 300 during the test operation of the BOP equipment 200 That is, in the vertical lower portion of the test well head module 300. [

The test well head module 300 includes a test case 320 formed to enable latching of the BOP device 200 and includes a main case 310 in which a mud liquid circulating chamber 311 is formed, And a well casing 330 mounted on a lower portion of the test well head 320.

According to this structure, the BOP testing apparatus according to an embodiment of the present invention can put the BOP equipment 200 into the sea bed and can seat the test well head module 300 placed on the seabed, 0.0 > 200, < / RTI > the test wellhead module 300 can be performed underwater, i.e., at sea floor. The reliability of the test result can not be secured because the landing test for checking the problem occurred in the process of coupling the BOP equipment 200 to the test well head module 300 was performed on the ground in the prior art, The landing test for the BOP equipment 200 can be carried out at an undersea environment condition similar to the actual environment, so that the accuracy and reliability of the landing test result can be improved.

Since the test well head module 300 is fixedly mounted on a separate fixed base 800 and fixed to the seabed together with the fixed base 800 so that the BOP equipment 200 is latched to the test well head module 300 The test operation for the BOP equipment 200 is performed in a state where the BOP equipment 200 is latched to the test wellhead module 300 The test well head module 300 can be stably fixed together with the stationary base 800 so that the test operation can be performed stably regardless of the submarine environments such as waves or algae.

The test well head module 300 or the stationary base 800 may be provided with a separate BOP device 200 for guiding the movement path of the BOP device 200 in the course of latching the BOP device 200 to the test well head 320. [ The guide unit 360 can be mounted to facilitate the latching process of the BOP equipment 200 with respect to the test well head 320 more easily and accurately.

Next, the test well head module 300 according to an embodiment of the present invention will be described in more detail.

The test well head module 300 according to an embodiment of the present invention is configured such that the mud liquid supplied from the drill string 210 to the test well head module 300 is circulated in the test well head module 300, And riser 220 to the drill string 210 again.

Therefore, the BOP test apparatus according to an embodiment of the present invention can perform a landing test operation for the test well head module 300 of the BOP equipment 200 as described above, To the test well head module 300 to perform a mud cycle test on the BOP equipment 200. [

The test well head module 300 formed as described above includes the main case 310, the test well head 320, and the well casing 330 as shown in FIG.

The main case 310 is formed in a hollow cylindrical shape in which a mud liquid circulating chamber 311 is formed and is mounted on the fixed base 800. At this time, a recessed groove 811 is formed in the center of the fixed base 800, and the outer circumference of the main case 310 can be mounted in close contact with the inner circumferential surface of the recessed groove 811. The inner pressure of the main case 310 is reinforced by the concave groove 811 of the fixing base 800 so that even if the inner pressure formed in the mud liquid circulation chamber 311 is relatively high, .

The test well head 320 is disposed at the upper end of the main case 310 so that the BOP equipment 200 is latched at the upper end and the BOP bore hole 201 and the mud liquid circulating chamber 311 A well head bore hole 321 is formed. At this time, the well head bore hole 321 has a main hole 321-1 whose both ends are in communication with the inner space of the BOP bore hole 201 and the well casing 330, And a sub-hole 321-2 communicated with the mud liquid circulation chamber 311 at one end thereof.

The well casing 330 is formed in the same shape as the well casing used in the drilling stage of the actual submarine well, and is mounted on the lower portion of the test well head 320 so as to be disposed inside the mud liquid circulation chamber 311, A mud liquid discharge hole 331 is formed so that the internal space of the casing 330 is communicated with the mud liquid circulation chamber 311.

3, when the mud liquid is supplied continuously from the drill string 210 to the inner space of the well casing 330 at a predetermined pressure or higher, the mud liquid supplied to the inner space of the well casing 330 is discharged to the inside of the well casing 330, And then flows into the mud liquid circulation chamber 311 through the liquid discharge hole 331 and then flows from the mud liquid circulation chamber 311 to the sub head of the well head bore hole 321, Flows into the BOP borehole 201 of the BOP equipment 200 through the BOP borehole 201 and continues to flow back to the borehole 210 along the riser 220 .

At this time, the method of supplying the mud liquid to the inner space of the well casing 330 may be configured in such a manner that the mud liquid is supplied using a drill pipe as in the actual drilling step of the submarine well, The mud liquid can be supplied to the inner space of the well casing 330 through the test pipe 230 which is similar to the actual drill pipe. That is, the test pipe 230 is extended downward from the slip line 210 to the inner space of the well casing 330 along the inner space of the riser 220, and the mud liquid is supplied from the drill pipe 210 through the test pipe 230 .

As described above, the mud liquid supplied through the test pipe 230 is supplied to the BOP equipment 200 and the riser (not shown) through the mud liquid circulating chamber 311 inside the test well- 220 to the drill string 210 again.

Therefore, the BOP test apparatus according to an embodiment of the present invention can perform the circulation test for the mud liquid for the BOP equipment 200 through the mud liquid circulation flow described above. That is, various types of tests can be performed such as whether the mud liquid smoothly circulates in the mud liquid circulation process, whether the mud liquid is leaked from the BOP equipment 200, or whether the BOP equipment 200 is safe .

Meanwhile, a measurement sensor 340 capable of measuring the state of the test environment in the mud liquid circulation chamber 311 may be mounted in the mud liquid circulation chamber 311. The measurement sensor 340 may be configured to measure the internal pressure, temperature, and the like of the mud liquid circulation chamber 311.

The data transfer unit 350 may include a data transfer unit 350 for receiving a value measured by the measurement sensor 340 and transferring the data to a separate control room 600. The data transfer unit 350 is connected to the fixed base 800, Or to transmit signals to the control room 600 in a wireless manner. In this case, the control room 600 can perform various control functions such as controlling the operation state of the BOP equipment 200 or adjusting the supply pressure of the mud liquid. In general, the control room 600 installed in the drill ship 210 ) Can be applied as it is.

In the above description, a method of performing the landing test and the mud circulation test on the BOP equipment 200 through the test wellhead module 300 has been described. However, the high-pressure fluid may be supplied to the BOP equipment 300 through the test well- 200 may also be subjected to an internal pressure test for the BOP equipment 200. In addition, the test well head module 300 may be configured in a simple form with only the test well head 320 mounted on the stationary base 800, unlike the above description, through which a landing test for the BOP equipment 200 and And may be configured to perform an internal pressure test.

FIG. 4 is a view schematically showing an installation structure of a BOP test apparatus according to an embodiment of the present invention, and FIG. 5 is a view schematically showing the structure of a fixed base and an air buoyant body according to an embodiment of the present invention. And FIGS. 6 to 13 are conceptual diagrams schematically illustrating a process of testing the BOP equipment using the BOP test apparatus according to an embodiment of the present invention.

In the BOP test apparatus according to the embodiment of the present invention, the fixed base 800 and the test well head module 300 are moved down through the riser 220 of the drill pipe 210, A variety of drill rigs such as a drill rig can be applied. In an embodiment of the present invention, as shown in FIGS. 1 and 4, a semirig line can be applied.

The semi-rigid line includes a column 212 installed vertically from a pontoon 211 and a pontoon 211 disposed to sink a predetermined depth from the sea level, and a horizontal deck 213 formed on the top of the column 212 And a deck 213 is formed with a door frame 214 for extending the riser 220 downward.

As the drill string 210 is applied as a semi-rigid line, the riser 220 is extended downward while keeping the fixed base 800 and the test well head module 300 in the sea, To the head module 300. A separate well head connector 222 may be mounted on the lower end of the riser 220 to latchably couple the test well head module 300 to the test well head module 300. The riser 220 may be connected to the riser 220 through the well head connector 222, The test well head module 300 can be easily latched. A signal cable (not shown) extending from the drill string 210 and a connector socket 221 connected to the signal cable can be mounted on the riser 220. The connector socket 221 is provided with an air buoyancy member 840 Can be inserted and connected.

4, the pontoon 211 is maintained in a state of being submerged at a certain depth from the sea surface. Therefore, when the deck 213 of the semi-league line is held in the fixed base 800, It is possible to move the semi-rigid line so as not to interfere with each other so as to be located at the upper portion of the semi- In this state, the riser 220 may extend downward and be coupled to the test well head module 300. Thereafter, as the riser 220 is coupled to the test well head module 300, as the riser 220 continues to move downward, the fixed base 800 moves down to the floor of the seabed and the suction jacket 830 Can be fixedly installed on the bottom of the sea floor.

In order to extend the riser 220 downward from the semi-rig line to the test well head module 300 of the stationary base 800, the stationary base 800 must be maintained at the sea of the installation area. A floating platform 700 (see FIGS. 7 and 8) may be provided. The lifting winch W is mounted on the floating platform 700 and the fixed base 800 is connected to the lifting winch W of the floating platform 700 and can be held floating .

Two lifting platforms 700 are provided and the lifting winches W mounted on the respective floating platforms 700 are symmetrically connected to both sides of the fixed base 800 so that the fixed base 800 And can be maintained in a stable state at sea.

The winch descent winch W is configured such that a wire 701 is wound around a winch drum 710 and the winch drum 710 is configured to rotate by a separate drive motor (not shown). The wire 701 is guided by the guide roller 720 and is wound or unwound on the winch drum 710 in accordance with the rotation of the winch drum 710. A winch hook 730 is mounted at the end of the wire 701 to engage with the lifting lug 801 of the fixing base 800. At this time, the winch hook 730 may be electrically driven, and a separate signal cable (not shown) may be connected to the winch hook 730 for this purpose.

 5, a separate air buoyancy member 840 may be detachably coupled to the stationary base 800. As shown in FIG. At this time, a separate buoyancy body lug 802 may be mounted on the side of the anchoring base 800 and an air buoyant body hook 840 may be mounted on the buoyancy body lug 802, (850) can be mounted. A separate cable connector 860 is mounted on the electric buoyancy body hook 850 so that the electric buoyancy body hook 850 can be operated and the cable connector 860 is connected to the connector socket 221 mounted on the riser 220 And can be connected to the signal cable.

According to this construction, the electric buoyancy hook 850 is connected to the signal cable through the cable connector 860 and the connector socket 221, so that the electric buoyancy hook 850 May be operatively controlled to engage or disengage the buoyancy body lug (802).

That is, when the fixed base 800 is installed on the floor of the seabed, the operation of the electric buoyant body hook 850 is controlled by the operation control signal, The air buoyancy body 840 can be detached from the fixed base 800 by operating the electric buoyancy squeeze hook 850 to disengage from the buoyancy body lug 802,

Next, a BOP test process including a process of installing the fixed base 800, on which the test well head module 300 is fixedly mounted, as described above will be described with reference to FIGS. 6 to 13.

The BOP testing process according to an embodiment of the present invention may be performed by first mounting the test well head module 300 on the fixed base 800 and mounting the test well head module 300 fixed on the fixed base 800 separately The test fixture 800 and the test well head module 300 are fixed to the bottom of the seabed by being coupled to the riser 220 extending downward from the drill pipe 210 of the drill rig 210, The BOP equipment 200 is lowered and latched to the test well head module 300.

6, the fixed base 800, to which the test well head module 300 is fixedly mounted, is installed as a separate auxiliary (not shown) Is mounted on the barge line (790), and the auxiliary barge line (790) is transferred to the stationary base (800). At this time, the fixed base 800 can be transferred through the auxiliary barge line 790 in a state where the air buoyancy body 840 described above is coupled. The air buoyancy body 840 is coupled to the buoyancy body lug 802 of the anchoring base 800 by an electrically buoyant body hook 850.

7, the two float platforms 700 are positioned and the auxiliary barges 790 are positioned between the two floating platforms 700 so that the stationary base 800 is positioned . The winch hooks 730 of the upward and downward winches W mounted on the two floating platforms 700 are coupled to the lifting lugs 801 of the fixed base 800, To the winch descent winch (W).

When the winch hook 730 is coupled to the lifting lug 801, the auxiliary bar line 790 is moved away from the fixed base 800. When the auxiliary bar line 790 is moved, the fixed base 800 floats on the water while being supported by the up / down winch W of the floating platform 700 as shown in FIG.

9, the test well head module 300 of the fixed base 800 moves the drill string 210 such that the test well module 300 is vertically lower than the door drum 214 of the drill string 210. In this state, The riser 220 extends downward to couple the bottom of the riser 220 and the test well head module 300. At this time, a separate well head connector 222 is attached to the lower end of the riser 220 and is easily latched and coupled with the test well head module 300 in a detachable form. An air buoyancy body 840 is coupled to the stationary base 800 through an electrically buoyant body hook 850. A cable connector 860 mounted to the electrically buoyant body hook 850 is mounted at the lower end of the riser 220 And is inserted into and connected to the connector socket 221.

10, the riser 220 is continuously moved downward to move the fixed base 800 and the test well head module 300 downward, and the fixed base 800 and the test well head module 300 are fixed by the suction jacket 830 of the fixed base 800, The base 800 is fixed to the bottom of the sea floor.

Thereafter, as shown in FIG. 11, the riser 220 is separated from the test wellhead module 300 and recycled upwardly to the drill string 210. Disassociation of the riser 220 and the test well head module 300 may be performed in such a manner that operation of the well head connector 222 coupled to the lower end of the riser 220 is controlled. The well head connector 222 may be connected to the control portion of the drill string 210 via the above-described signal cable. At the same time, a control signal is transmitted to the electrically driven buoyancy hook 850 via the connector socket 221 and the cable connector 860 connected to the signal cable to couple the electrically driven buoyancy hook 850 from the buoyancy body lug 802 Thereby allowing the air buoyancy body 840 to be detached from the fixed base 800. The air buoyancy member 840 is moved upward by the buoyant force, and the upwardly moved air buoyancy member 840 is separately collected and recovered from the sea.

Through this process, the stationary base 800 and the test well head module 300 are fixedly installed on the bottom of the seabed.

12, the BOP equipment 200 is coupled to the lower end of the upwardly recovered riser 220 by the drill pipe 210 and the riser 220 is extended downward BOP equipment 200 is lowered and latched to the test well head module 300 located at the bottom of the ocean floor. During the latching process, the BOP equipment 200 performs a landing test on the test well head module 300. Therefore, in the embodiment of the present invention, since the landing test of the BOP equipment 200 is performed underwater, that is, at the sea floor, the BOP equipment 200 can perform the test in an environment similar to the environment where the BOP equipment 200 is actually used, Results can be obtained.

13, the test pipe 230 is extended downward from the drill pipe 210 to the test well head module 300 while the BOP equipment 200 is latched to the test well head module 300. Then, And continuously supplies the mud liquid to the test well head module 300 using a test pipe 230 at a predetermined pressure or higher. When the mud fluids are supplied as described above, the supplied mud fluids are circulated in the test well head module 300 as described above, and then moved upward along the inner space of the BOP equipment 200 and the riser 220, ). This mud liquid circulation flow can be used to perform a mud liquid circulation test on the BOP equipment 200.

In addition, a high-pressure fluid is supplied to the test well head module 300 using a test pipe 230 or a separate fluid supply line (not shown), and the fluid supplied to the test well head module 300 is supplied to the BOP equipment 200 so that various tests on the BOP equipment 200 can be carried out in water, such as performing an internal pressure test on the BOP equipment 200. [

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

200: BOP equipment 201: BOP bore hole
210: Drilling rig 211:
220: riser 221: connector socket
222: well head connector 230: test pipe
300: test well head module 310: main case
311: Mud Liquid Circulation Chamber 320: Test Well Head
321: Well head bore hole 330: Well casing
331: Mud liquid discharge hole 340: Measurement sensor
350: Data transfer unit 360: BOP guide unit
600: control room 700: floating platform
701: Wire 730: Winch hook
800: Fixing base 801: Lifting lug
802: Buoyancy body lug 810: Base body
811: concave groove 820: reinforcing member
830: Suction jacket 840: Air buoyancy body
850: Electric buoyancy hook 860: Cable connector

Claims (23)

A BOP test apparatus for testing BOP equipment,
A fixed base formed to be fixedly installed on the bottom of the seabed; And
A test well head module fixedly mounted on the fixed base so as to be able to be latched by the BOP equipment,
Wherein the test well head module is coupled to a lower end of a riser extending downward from a separate drill string, the test well head module and the fixation base are moved down with the riser and installed on the floor of the seabed,
Wherein the test for the BOP equipment is performed in water. The method according to claim 1,
And a separate well head connector is mounted on the lower end of the riser so as to be detachably coupled to the test well head module. 3. The method of claim 2,
And a separate air buoyant body is detachably coupled to the fixed base. The method of claim 3,
Wherein an additional buoyant body lug is mounted on the fixed base and the air buoyant body is mounted with an electrically operated buoyancy hook that is electrically actuated to engage the buoyant body lug. 5. The method of claim 4,
A signal cable extending from the drill rig and a connector socket connected to the signal cable are mounted on the riser,
Wherein the electric buoyancy body hook is mounted with a separate cable connector and is connected to the connector socket so that the electric buoyancy body hook can be operated. The method according to claim 1,
The fixed base is connected to an up-and-down winch mounted on a floating platform to be supported on the sea of the installation area,
And the riser extends downward from the drill string and is latched to the test well module in a state that the fixed base is supported in a floating state. The method according to claim 6,
Wherein two floating platforms are provided, and up / down winches mounted on the respective floating platforms are connected to both sides of the fixing base to support the fixing base in the sea. 8. The method of claim 7,
Wherein the fixed base is conveyed to the floating platform via a separate auxiliary barge. The method according to claim 6,
And an electric winch hook electrically operated to be engaged with the fixed base is mounted on a wire end of the up / down winch, a separate signal cable is connected to the electric winch hook so that the electric winch hook is operated, Is wound on the winch drum of the up / down winch along with the wire. 10. The method according to any one of claims 1 to 9,
The riser is separated from the test well head module and upwardly moved to the drill string after the fixation base and the test well head module are installed on the bottom of the seabed,
Wherein the BOP equipment is connected to a lower end of the riser, moves downward with the riser, and is latched to the test well module after the riser moves upward to the drill string. 11. The method of claim 10,
Wherein the test well head module is formed such that the mud fluids supplied to the test well head module from the drill ship are circulated in the test well head module and can be returned to the drill ship through the BOP equipment and the riser BOP testing device. 12. The method of claim 11,
The test well head module
A main case mounted on the fixed base to form a mud liquid circulation chamber therein;
A test well head in which a well head bore is formed so as to communicate with both the BOP bore of the BOP equipment and the mud liquid circulation chamber, the test well being disposed at an upper end of the main case so that the BOP equipment is latched on an upper portion thereof; And
A well casing having a mud liquid discharge hole formed therein so that an inner space communicates with the mud liquid circulation chamber;
The BOP test apparatus comprising: 11. The method of claim 10,
Wherein the drill rig is applied as a semi-rigid line. In a BOP test method for testing BOP equipment,
(a) fixing and mounting a test well head module, which is configured to latch the BOP equipment, to a separate fixed base;
(b) coupling a test well head module fixedly mounted on the fixed base to a riser extending downward from a separate drill string, moving the same downward along with the riser, and fixing the test well module on the bottom of the sea floor; And
(c) lowering and latching the BOP equipment to a test wellhead module located at the bottom of the sea floor with the fixed base
Wherein the test for the BOP equipment is performed in water. 15. The method of claim 14,
The step (b)
(b-1) connecting the up-and-down winch mounted on a separate floating platform to the fixed base to support the fixed base in the sea of the installation area;
(b-2) extending the riser downward from the drill rig to the test well module;
(b-3) separating the upward / downward winch from the fixed base; And
(b-4) a step of lowering the fixed base and the test well module together with the riser while fixing the test well head module to the lower end of the riser,
The BOP test method comprising the steps of: 16. The method of claim 15,
The step (b-1)
Mounting the fixed base on a separate auxiliary barge and transferring the fixed base to an installation area;
Connecting a lifting winch of the floating platform to the fixed base; And
Moving the sub-barge in a state separated from the fixed base while the fixed base is connected to the up-and-down winch
The BOP test method comprising the steps of: 17. The method of claim 16,
The step of connecting the lifting winch of the floating platform to the fixed base
Wherein two floating platforms are provided and each of the lifting winches mounted on each floating platform is connected to both sides of the fixed base respectively. 16. The method of claim 15,
Further comprising the step of coupling a separate air buoyant body to the stationary base prior to moving the stationary base and the test wellhead module down with the riser. 19. The method of claim 18,
Wherein the step of separating and removing the air buoyancy body from the stationary base is performed after the stationary base and the test well head module are moved down together with the riser. 20. The method of claim 19,
A separate buoyancy body lug is mounted on the fixed base, and the air buoyancy body is equipped with an electrically operated buoyancy body hook that is electrically actuated to be coupled to the buoyancy body lug,
A signal cable extending from the drill rig and a connector socket connected to the signal cable are mounted on the riser,
Wherein the electric buoyancy body hook is mounted with a separate cable connector and is connected to the connector socket so that the electric buoyancy body hook can be operated. 21. The method according to any one of claims 14 to 20,
The step (b)
Separating the riser from the test well head module and recovering the riser to the drill string after the fixed base and test well head module is installed on the floor of the seabed,
The step (c)
Wherein the BOP equipment is connected to a lower end of the riser and moved down with the riser to latch the BOP equipment to the test well module after the riser is recovered upward by the drill bit. 22. The method of claim 21,
Wherein the test well head module is configured such that the mud fluids supplied from the drill rig to the test well head module circulate in the test well head module and back to the drill rig via the riser and the BOP equipment coupled to the test well head module Lt; / RTI >
And supplying the mud fluids to the test well head module to perform a circulating mud test on the BOP equipment. 22. The method of claim 21,
Wherein the drill rig is applied as a semi-rigid line.

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