CN202610827U - Movable foundation of well testing derrick - Google Patents

Abstract

The utility model relates to the technical field of borehole operation sites in an oil field, in particular to a movable foundation of a well testing derrick for well testing and well repairing operation processes of the oil field. The movable foundation at least comprises a main body (1) and support legs (2), wherein the main body (1) is 2.6m in length, 1.6m in width and 0.6m in height, the two support legs (2) are arranged on the main body (1), the center distance between the two support legs (2) is 1.53m, a center line of the support legs (2) is a line parallel to the center line of the main body, and the distance between the line (7) parallel to the center line of the main body and the center line (6) of the main body is the product of a foundation thickness and the tangent value of an included angle between the derrick and the vertical line. The movable foundation overcomes the defect of operating risks such as tip-back of the foundation and inclination of the derrick of the movable foundation of the derrick, is increased in stress area, is reduced in size and weight due to the adoption of a steel structure, and ensures stability and safety during operation in the derrick.

Description

Formation testing derrick removable foundation

Technical field

The utility model relates to oilfield downhole operation site plant technical field, especially for the formation testing derrick removable foundation of oil field formation testing, workover treatment process.

Background technology

Existing derrick removable foundation all exist to sink and tilt (preceding high back is low) to some extent, exists operating risk such as to turn over, derrick is oblique behind the higher basis.Need design again the basis, avoid removable foundation to sink, tilt, improve the safety in the formation testing operation process, guarantee to produce and carry out smoothly.

The key technical problem that needs solution:

1, increases the foundation grounding area, avoid sagging; Possess rational in infrastructurely simultaneously, quality is suitable.Former derrick removable foundation is a concrete structure, and length is respectively 2.1m, 1.2m, 0.6m, floor space 2.52m ², be mainly used in the 2000m well depth.Ji's plateau project management department formation testing operating area deeply buried reservoir degree is generally darker, and average well depth is about 2800 meters.The removable foundation unit area is stressed to have increased by 49%, is the direct factor that causes the basis to be sunk easily.

2, eliminate the moment of torsion of removable foundation in pressurized process, avoid occurring tilting (preceding high back is low).According to the derrick installation requirement, derrick leans forward 3-5 °, and the derrick leg is on the removable foundation center line, and just there is a driving torque in removable foundation always when being stressed like this, is the low direct factor in high back before causing the basis to take place.

Summary of the invention

The utility model provides a kind of formation testing derrick removable foundation, and it avoids removable foundation to sink, tilt, and improves the safety in the formation testing operation process, guarantees to produce and carries out smoothly.It is applicable to the dark oil well of well depth.

The technical scheme of the utility model is a formation testing derrick removable foundation; It is characterized in that: which comprises at least main body and leg, the long 2.6m of main body, wide 1.6m, high 0.6m; Two legs are arranged on the main body; Two leg center distance are 1.53m, and the line of centres of leg is the parallel lines of main center's line, and the distance of the parallel lines of this main center's line and main center's line is the product of base thickness and derrick and vertical line angle tangent value.

Described body interior is channel-section steel, i iron welded construction, and there is the thick full steel plated of 16mm the outside, and the bottom is the channel-section steel structure.

The beneficial effect of the utility model is: eliminated basic driving torque, avoided basic stress and occur tilting (preceding high back is low); Increased the basic stress area, guaranteed that the derrick footing of formation testing derrick when the operation of 2000～3000m well depth do not sink; Adopt box steel frame construction, original relatively concrete has reduced basic volume and quality.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is described further, but not as the use of the utility model restriction:

Fig. 1 is a formation testing derrick removable foundation field operation sketch map;

Fig. 2 is formation testing derrick removable foundation and derrick installation sketch map;

Fig. 3 is a formation testing derrick removable foundation processing sketch map;

Among the figure: 1, main body; 2, leg; 3, formation testing derrick; 4, well mouth of oil well; 5, guy wire; 6, main center's line; 7, the parallel lines of main center's line; 8, body front end.

The specific embodiment

Embodiment 1

Formation testing derrick removable foundation; It is characterized in that: which comprises at least main body 1 and leg 2, main body 1 long 2.6m, wide 1.6m, high 0.6m; Two legs 2 are arranged on the main body 1; Two legs, 2 center distance are 1.53m, and the line of centres of leg 2 is the parallel lines 7 of main center's line, and the parallel lines 7 of this main center's line are the product of base thickness and derrick and vertical line angle tangent value with the distance of main center's line 6.

Embodiment 2

Like Fig. 2, shown in 3; This basis comprises that mainly main body 1 and 2, two legs 2 of leg are not positioned on main center's line 6, but is positioned on the parallel lines 7 of main center's line; The parallel lines 7 of this main center's line are for main center's line 6, more near body front end 8.Main body 1 inside is channel-section steel, i iron welded construction, and there is the thick full steel plated of 16mm the outside, and the bottom is the channel-section steel structure.During use, formation testing derrick 3 is installed on the leg 2, and ground is fixed in by guy wire 5 in the top.

This basis is applicable to the BJ18 formation testing derrick of 2000～3000m well depth.During installation, as shown in Figure 1, the underground that the basis is installed is dug compacting and smooth, the lifting basis is in place, the 10cm that bassets, the maintenance level is tamped with soil around the basis derrick can be installed.

Parts that present embodiment is not described in detail and structure belong to well-known components and the common structure or the conventional means of the industry, here not narration one by one.

Claims (2)

1. formation testing derrick removable foundation; It is characterized in that: which comprises at least main body (1) and leg (2), the long 2.6m of main body (1), wide 1.6m, high 0.6m; Two legs (2) are arranged on the main body (1); Two legs (2) center distance is 1.53m, and the line of centres of leg (2) is the parallel lines (7) of main center's line, and the parallel lines of this main center's line (7) are the product of base thickness and derrick and vertical line angle tangent value with the distance of main center's line (6).

2. formation testing derrick removable foundation according to claim 1 is characterized in that: described main body (1) is inner to be channel-section steel, i iron welded construction, and there is the thick full steel plated of 16mm the outside, and the bottom is the channel-section steel structure.

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