KR101342940B1 - Bop tset stump - Google Patents

Abstract

The present invention relates to a BOP test stump capable of actively corresponding to the movement or position of a BOP stack for a pre-test of the BOP stack and settling and testing the BOP stack at a narrow space in various directions. The BOP test stump for marine plants according to the present invention comprises: a cylindrical case, a first hydraulic cylinder, a body unit, a pair of first combining plates, a first plate member, a pair of first support units, a pair of second combining plates, a second plate member, a pair of second support units, a pair of third combining plates, a second hydraulic cylinder, and first and second connection members.

Description

BOP tset stump}

The present invention relates to a biooptic test stump, and more preferably can actively respond to the movement or position of the bioopia stack for the pre-testing of the bioopia stack used in the deep sea during oil drilling in offshore plants. It relates to a non-operation test stump that can be tested by seating the non-operation stack in a variety of directions in space, more specifically, another hydraulic cylinder for mounting the non-operation stack according to the operation of the flexible hydraulic cylinder in the horizontal direction ( It relates to a biooptic test stump which is made to rotate a predetermined angle by a body part provided in a vertical direction).

Drilling vessels have generally been used to drill oil wells in oil or gas exploration. In particular, the importance of the development of deep sea oil fields, which has been ignored because of lack of economic feasibility, has been highlighted recently.

As a result, along with the development of submarine mining technology, drilling rigs with drilling equipments suitable for development of deep sea oilfields are being developed.

There are many kinds of such drilling vessels, and rig ships, stationary platforms, or drill ships are being operated in various forms.

Among the types of drill ships, drill ship is a ship equipped with drilling equipment, unlike existing fixed drilling equipment, and is manufactured in a shape similar to a general ship so that it can be sailed by its own power.

Because the drilling work is done on board the ship, the center of the drillship has a space with a large opening called the moonpool area, and the overall drilling work such as testing and maintenance of the drilling equipment in the moonpool area is carried out. do.

Underwater drilling can experience blowout, which is the flow of formation fluid that is not controlled into the drilling well.

Blow outs are dangerous and expensive and can lead to shortened life, contamination, damage to the drilling rig, and loss of well production. To prevent blow out, a Blow Out Preventer (BOP) stack is required.

Here, the BOP stack refers to a device for preventing a case where pavement flow such as pneumatic oil, gas, and water is suddenly ejected during the excavation of an oil well.

Such BOP stacks typically include a series of functions that can safely isolate and control the formation pressure and fluid at the drilling site.

This BOP stack includes a BOP unit, a low marine riser package (LMRP) unit connected to the BOP unit, and forms drilling equipment together with a riser pipe connected to the drillship.

In general, the BOP stack is exposed to high pressure because it is directly connected to the deep well of the deep well, and therefore, the BOP stack needs to be periodically tested, and the device used is a BOP test stump ( test stump).

That is, the BOP test stump is a device that tests the operation of the BOP stack before the deep sea bottom of the BOP stack.

1 is an example of a fixed BOP test stump that is currently in use, and this conventional BOP test stump is fixed on a drilling line as can be seen from the drawing, so it is inconvenient to move and therefore, in order to seat the BOP stack for testing, The problem is that the stack must be moved correctly to the BOP test stump.

In order to compensate for this problem, a skid type BOP test stump that can cope with the movement of the BOP stack as shown in FIG. 2 has been developed.

However, skid type BOP test stumps have problems that they can be stretched and moved in one direction and occupy a large area when installed.

Patent Document 1: US Patent No. 4,508,628 Applicant "Cameron Iron Works, Inc" filed "BLOWOUT PREVENTER STACKS AND METHOD OF TENSIONING STACK TIE RODS"

The present invention has been proposed to solve the above problems, to provide a BOP test stump that can actively respond to the movement or position of the BOP stack and can be tested by mounting the BOP stack in various directions in a narrow space. do.

The biooptic test stump for an offshore plant proposed by the present invention includes a cylindrical case, a vertically expandable first hydraulic cylinder mounted to the cylindrical case, one end portion coupled to the cylindrical case, and a through hole at the other end portion. A body portion formed, a pair of first fastening plates extending in a horizontal direction on one side of the body portion, and opposite fastening holes are formed and spaced apart by a predetermined interval in the vertical direction, and a first plate member having a rectangular shape; And a pair of first support portions coupled to one side of the first plate member and coupled to the marine plant deck, and horizontally formed on the upper side and the lower side of the opposite side of the first plate member, respectively, in a horizontal direction. A pair of second fastening plates each having a ball formed thereon, a second plate member having a rectangular shape, and the second A pair of second support portions coupled to one side of the plate member and coupled to the marine plant deck, and horizontally formed on the upper side and the lower side of the opposite side of the second plate member, respectively, with fastening holes formed therein. And a pair of third fastening plates, a horizontally expandable second hydraulic cylinder, and first and second connecting members respectively coupled to both end portions of the second hydraulic cylinder and having fastening holes formed therein, respectively.

In the present invention, the first support and the second support is fixed on the offshore plant deck spaced apart by a predetermined interval, so that the through hole of the body portion is located in a straight line between the fastening hole of the second fastening plate The column-shaped pole is inserted into the fastening hole of the second fastening plate and the through hole of the body part in a straight line to interconnect the body part and the second fastening plate, and the first connection between the pair of first fastening plates. A member is inserted into a column shape for interconnecting the pair of first fastening plates and the first connection member with the fastening holes of the pair of first fastening plates and the fastening holes of the first connecting member vertically positioned in a straight line. A first coupling member is inserted, and the second connection member is inserted between the pair of third fastening plates to connect the fastening hole and the second connection portion of the pair of third fastening plates. A second coupling member having a columnar shape for connecting the pair of third coupling plates and the second connection member to each other is formed while the fastening hole of the ash is vertically aligned.

In the present invention, the first hydraulic cylinder is a multistage double acting hydraulic cylinder, and the second hydraulic cylinder is composed of a single rod hydraulic cylinder.

In the present invention, the body portion at the time of expansion and contraction of the second hydraulic cylinder performs a rotational movement with the pole as the rotation axis.

In the case of the biooptic test stump according to the present invention, the BOP test can be performed in a narrow work space and the hydraulic cylinder type suitable for the marine environment can be manufactured to facilitate post-management, and the seating position according to the movement of the BOP is conventionally fixed. Or, compared with the skid type device, there is an advantage that it can be freely set.

1 is a conventional fixed biooptic test stump.
2 shows a conventional skid type biooptic test stump.
3 is an embodiment of a biooptic test stump in which two hydraulic cylinders proposed by the present invention are interlocked.
4 to 6 are diagrams for sequentially explaining the operation of the bio-optic stump according to the present invention.
Next, FIG. 7 and FIG. 8 are views explaining the stretching operation in the vertical direction of the hydraulic cylinder constituting the BOP test stump according to the present invention.

Hereinafter, the BIO test stump proposed by the present invention will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view of a biooptic test stump proposed in the present invention.

For reference, the technical idea of the present invention is to provide a non-opio test stump that can be placed in the bio-op stack by the rotational movement in a small area to use two hydraulic cylinders for this purpose. As is well known, the hydraulic cylinder injects fluid into the cylinder by using the hydraulic force generated by the hydraulic pump, and when the piston moves by pushing the piston by the applied hydraulic force, the movement of the piston is transmitted to the rod to receive a mechanical reciprocation. Hydraulic cylinder used in the present invention as an important mechanical element for generating a movement can be configured by selecting various types of hydraulic cylinders commonly used in the industry when performing the function proposed in the present invention.

As shown, the BIO test stump according to the present invention is largely composed of four components.

The first component includes a body part 100 having a substantially hexahedron shape and a cylindrical case 102 coupled to one end of the body part 100.

The cylindrical case 102 is provided with a first hydraulic cylinder 104 that can be stretched in the vertical direction.

The top rod of the first hydraulic cylinder 104 is equipped with a BIO stack and is made of a multi-stage double acting hydraulic cylinder well known in the art for vertical movement, but other types of hydraulic cylinders may be possible for stretching in the vertical direction. .

On the other hand, the other end portion of the body portion 100 is formed with a through hole 106, one side surface of the body portion 100 is formed extending in the horizontal direction and facing fastening holes (h11, H12) respectively formed And a pair of first fastening plates 108 and 110 spaced apart by a predetermined interval in the vertical direction.

Next, the second component is a component interconnected with the through hole 106 of the first component. The first plate members 201 and 202 having a large rectangular shape and the plate member 202 may be bolts. Coupled to each other by a nut coupling or the like, a pair of first support portions 203 coupled to one side of the first plate members 201 and 202 (more specifically, the plate member 201), and a first plate. A pair of second fastenings formed in the horizontal direction on the opposite side of the members 201 and 202 (more specifically, the plate member 202) in the horizontal direction, and the fastening holes h21 and h22 are formed, respectively. Plates 206 and 208.

The first support portion 203 is coupled to the plate member 201 and at the same time can be a variety of shapes in a structure that is fixed by a bolt nut or the like on the offshore plant deck.

On the other hand, the cylindrical through hole 106 formed in the body portion 100 is inserted between the second fastening plates 206 and 208, and a pole of a column shape (more specifically, a cylinder shape) is vertical. Is inserted in a straight line into the fastening hole h21 formed in the fastening plate 206, the through hole 106, and the fastening hole h22 of the fastening plate 208, so that the body part 100 has the pole 204 as the axis. It is manufactured to enable a rotary motion. That is, the pole 204 functions as a rotation axis of the body portion 100.

Next, the third component is a pair of second plate members 301 and 302 which are bolted to each other in a rectangular shape, and on one side of the second plate members 301 and 302 (more specifically, the plate 301). A pair of second supports 303 coupled and fixed directly coupled to the offshore plant deck, and on the upper and lower sides of opposite sides of the second plate members 301, 302 (more specifically, the plate 301). A pair of third fastening plates 306 and 308 are formed in the horizontal direction and fastening holes h31 and h32 are formed, respectively.

Finally, the fourth component is a horizontally expandable second hydraulic cylinder 401 and the first and second coupled to both ends of the second hydraulic cylinder 401, respectively, the fastening holes (h41, h42) are formed, respectively. Connecting members 402 and 404.

The rod, which is one end of the second hydraulic cylinder, is formed in a manner that is coupled with the first connecting member 402, and the other end of the second hydraulic cylinder is formed in a manner that is coupled with the second connecting member 404. In the present invention, the second hydraulic cylinder 401 is made of a single rod type hydraulic cylinder in order to be able to move in the horizontal direction to be stretchable, but various types of hydraulic cylinders that can be stretched in the horizontal direction will be possible.

In the coupling method, the first coupling member 402 is inserted between the pair of first coupling plates 108 and 110 so that the coupling holes h11 and h12 are formed in the pair of first coupling plates 108 and 110, respectively. And a column for connecting the pair of first fastening plates 108 and 110 and the first connection member 402 to each other in a state in which the fastening holes h41 formed in the first connection member 402 are vertically aligned. The first coupling member 501 is inserted.

Meanwhile, a second connection member 404 is inserted between the pair of third fastening plates 306 and 308 so that the fastening holes h31 and h32 and the second connection member formed in the pair of third fastening plates 306 and 308, respectively. A second coupling member having a columnar shape for connecting the pair of third fastening plates 306 and 308 and the second connection member 404 to each other in a state in which the fastening hole h42 of 404 is vertically aligned with each other ( 502 is inserted.

As a result, the body part 100 can perform a rotational movement with the pole 204 as the axis according to the expansion and contraction operation of the second hydraulic cylinder 401.

Therefore, the cylindrical case 102 coupled to the body portion 100 can also naturally rotate.

As a result, unlike the conventional fixed or skid type non-operation test stump, when using the non-operation test stump using two hydraulic cylinders 104 and 401 as in the present invention, the position of the bio-operation stack under a small area Accordingly, there is an advantage in that the position of the first hydraulic cylinder 104 on which the biooptic stack is to be placed can be freely adjusted within a predetermined radius range.

4 to 6 are diagrams for explaining the operation of the biooptic test stump proposed in the present invention.

4 is a state before operation and FIG. 5 shows a state in which the body portion 101 rotates by operating the second hydraulic cylinder 401, and FIG. 6 shows the first hydraulic cylinder in a state of rotating about 70 to 80 degrees. It shows 104 extending in the vertical direction.

Next, FIG. 7 and FIG. 8 are diagrams illustrating the stretching operation in the vertical direction of the hydraulic cylinder constituting the BOP test stump according to the present invention. FIG. 7 is a diagram illustrating an extension process and FIG. 8 a contraction process. As described above, in the case of the present invention, a conventional hydraulic cylinder was used.

As can be seen from the above description, in the case of the non-operation test stump according to the present invention, the non-operation test can be performed in a narrow work space and the hydraulic cylinder type suitable for the marine environment is provided, so that the post-management is easy. There is an advantage that the seating position according to the movement of the bio-op can be set more freely compared to the conventional fixed or skid type device.

In addition, as described above, in the case of the present invention, the hydraulic cylinder 401 which can be expanded and reciprocated in the horizontal direction is made of a single rod type hydraulic cylinder, and the hydraulic cylinder 104 which can be expanded and reciprocated in the vertical direction is multistage. Although manufactured with a type double acting hydraulic cylinder, this is only one example, and various modifications that perform the same function will be possible.

In addition, in the present invention, the support portions 203 and 303 are fixed to the deck of the marine plant by bolt nut coupling or the like, and thus can be separated and moved on the deck as needed.

The above description is focused on the matters necessary to understand the technical spirit of the present invention, and the remaining additional parts correspond to simple design changes such as bolt nuts to partially join each component, and those skilled in the art will carry out. Obvious matters that can be freely selected for cooking are omitted because they can obscure the nature of the invention.

In addition, in the present invention, for each member constituting each component, its shape or material (in the case of the present invention, iron is used, but if the strength is sufficient, other materials may be selected) may be variously changed. For example, in the case of the support parts 203 and 203, the function serves to fix the non-operation test stump on the deck according to the present invention can be changed in various shapes within the range capable of performing this function.

100: Body part
102: cylindrical case
104: 1st hydraulic cylinder
106: through hole
h11, h12: fastener
108, 110: fastening plate
201, 202: plate member
204: pole
h21, h22: fastener
206, 208: fastening plate
301 and 302: plate member
303: support
h31, h32: fastener
306, 308: fastening plate
401: hydraulic cylinder
h41, h42: fastener
402, 404: connecting member
501: 502: coupling member

Claims (3)

In the biooptic test stump for offshore plant,
With cylindrical case,
A first hydraulic cylinder stretchable in a vertical direction mounted to the cylindrical case;
A body portion having one end coupled to the cylindrical case and a through hole formed at the other end;
A pair of first fastening plates extending in a horizontal direction on one side of the body part and having fastening holes facing each other and spaced apart at predetermined intervals in a vertical direction;
A rectangular first plate member,
A pair of first supports coupled to one side of the first plate member and coupled to the offshore plant deck;
A pair of second fastening plates each formed in the horizontal direction on the upper side and the lower side of the opposite surface of the first plate member and having fastening holes formed therein, respectively;
A second plate member having a rectangular shape,
A pair of second supports coupled to one side of the second plate member and coupled to the offshore plant deck;
A pair of third fastening plates each formed in a horizontal direction on the upper side and the lower side of the opposite surface of the second plate member and having fastening holes formed therein, respectively;
2nd hydraulic cylinder which can be stretched horizontally,
And first and second connection members respectively coupled to both end portions of the second hydraulic cylinder and having fastening holes formed therein,
The first support and the second support is fixed on the offshore plant deck spaced apart a predetermined interval,
The column-shaped pole is inserted in a straight line between the fastening hole of the second fastening plate and the through hole of the body part in such a state that the through hole of the body part is located in a straight line between the fastening holes of the second fastening plate. Interconnecting the second fastening plates;
The first connecting member is inserted between the pair of first fastening plates such that the fastening holes of the pair of first fastening plates and the fastening holes of the first connecting member are vertically aligned with the pair of first fastening plates. A first coupling member having a columnar shape for connecting the first connection member to each other is inserted,
The second connecting member is inserted between the pair of third fastening plates such that the fastening holes of the pair of third fastening plates and the fastening holes of the second connecting members are vertically aligned with the pair of third fastening plates. A second coupling member having a columnar shape for interconnecting the second connection members is inserted therein,
The body part during the expansion and contraction of the second hydraulic cylinder biooptic test stump, characterized in that the rotational movement with the pawl as the rotation axis. The method of claim 1,
The first hydraulic cylinder is a multi-stage double-acting hydraulic cylinder, and the second hydraulic cylinder is a short rod type hydraulic cylinder, characterized in that the bio-optic test stump. delete

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