CN2611586Y - Mechanical depth correcting device for underground pipe column - Google Patents

Abstract

The utility model relates to a deep device of tubular column machinery school of tubular column machinery in pit of oil field oil-water well tubular column location usefulness in deep water. The main part, the retaining ring, the elastic ring, the locating block, the plate spring, the core and the like are arranged, the core sleeved in the main part is connected through a shear pin, the sealing rings are arranged between the outer walls of two ends of the core and the inner wall of the main part, and the locating block and the plate spring which are connected through screws are arranged in the rectangular groove of the main part in the middle of the outer wall of the main part through the connection of the spare cap, the retaining ring and the main part. The utility model has wide application range, and can realize depth correction of the underground pipe column by a method of pulling up the pipe column to shorten the sleeve coupling; the service cycle is long, safe and reliable, is particularly suitable for being applied in a water injection well for a long time, can reduce the outer diameter of the utility model by a method of pressing or impacting by a descending heavy object, and avoids sudden load change when a pipe lifting column passes through a short section of the sleeve; the operation is simple.

Description

Install deeply in down-hole string machinery school

One, technical field

The utility model relates to a kind of down-hole string machinery school and installs deeply, belongs to the oil field machinery oil field.

Two, technical background

Because subdivision of reservoir exploitation in oil field solves the needs of interlayer interference, requirement is accurately positioned in down-hole 2m with on the interior interlayer or interval with packer or measure instrument, because factor affecting such as tubing string chaining error, screw thread tightness and oil pipe newness degree, km tubing string error about 1m, is accurately joined lower tubular column greater than very difficult the measuring by ground of the oil-water well of 2000m well depth usually.Solve the dark problem in tubing string school and adopt the magnetic orientation technology usually, but there is the operating expenses height in this technology, accounts for deficiencies such as the product time is long, use limited.The oil-water well tubing string school that Chinese patent " down-hole locator " (ZL97212178.1) is suitable for the short-term measure is used deeply, the school that is not suitable for measure tubing strings such as separate layer water injection string and hydraulic sand blasting slot is dark, because its detent mechanism still keeps duty after finishing location action, under water injection well during prolonged application, there are problems such as burn into fouling and mechanical admixture obstruction, cause detent mechanism not reclaim, carry on the tubing string and meet card in the process easily, even cause tubing string to pull off overhaul, bring hidden danger to construction operation.

Three, summary of the invention

The purpose of this utility model is exactly the deficiency that overcomes above-mentioned technology, provides the down-hole string machinery school that a kind of scope of application is wide, life cycle is long, construction operation is safe and reliable, cost is low to install deeply.

For realizing that the technical scheme that the purpose of this utility model is taked is:

The utility model mainly is made up of main body, retaining ring, elastic ring, locating piece, leaf spring and fuse etc., the fuse of suit is connected by shear pin in the main body, be provided with sealing ring between fuse two ends outer wall and the main body inner wall, main body outer wall middle part is by being equipped with being connected of cap and retaining ring and main body, in the rectangular recess that locating piece that will connect by screw and leaf spring place main body.

Main body top has 2 pairs of uniform tapped through holes at least, wherein has 1 pair of shear pin that is used to connect main body and fuse at least, has at least 1 pair to be used to insert spacer pin, and the middle part outer wall has 1 pair of uniform rectangular recess at least, and its length direction parallels with main body axis;

The fuse external wall of upper portion is furnished with 2 road annular grooves, and the width of wherein going up annular groove is bigger than the width of following annular groove, is suitable for the insertion of spacer pin and shear pin respectively, and the width of following annular groove is less than the diameter of spacer pin; There are two boss at the fuse middle part; Fuse top external diameter is greater than lower outer diameter, and the internal diameter up and down of main body is complementary with it; Between fuse upper surface and endoporus smooth bevel is arranged;

External surface has the locating piece of a boss to be sleeved in the rectangular recess, and locating piece two ends outer wall is with elastic ring and retaining ring, and retaining ring and main body are by screwed connection, and there is the cap fully that is connected with main body by screw thread the retaining ring rear end; In the locating piece inboard, two ends are sitting on the boss of fuse leaf spring by screw; In at least 1 double thread through hole, be positioned at the following annular groove of fuse by the cylindrical end of the shear pin of screwed connection with main body; In at least 1 double thread through hole, insert spacer pin, spring and pressure cap successively, pressure cap and main body are by screwed connection, and spacer pin one end withstands on the fuse outer wall.

Employing the utlity model has following advantage:

(1) scope of application is wide, can look for the method for short sleeve box cupling to realize that the down-hole string school is dark by the upper lifting pipe post.

(2) life cycle is long, and is safe and reliable, is particularly suitable for using in water injection well for a long time.The method that can press or be lowered to the weight bump by spraining makes the utility model reduced diameter, sudden load change when avoiding lift pipe string to pass through casing nipple.

(3) simple to operate, cost is low.

Four, description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A generalized section of Fig. 1.

Fig. 3 is the view after receiving in the utility model.

Five, the specific embodiment

Referring to accompanying drawing, the utility model mainly is made up of main body 1, retaining ring 8, elastic ring 9, locating piece 10, leaf spring 11 and fuse 13 etc.Has 1 pair of uniform rectangular recess on the described main body 1 at least, its length direction parallels with main body 1 axis, be used for placement positioning piece 10, locating piece 10 inboards are fixed with leaf spring 11 by screw 12, leaf spring 11 two ends are positioned on two boss of fuse 13, and its effect is to utilize the elastic force of leaf spring with locating piece 10 extrapolations; There is retaining ring 8 outside, locating piece 10 two ends, and it is spacing that the retaining ring 8 by screwed connection main body 1 is used for locating piece 10; There is the cap 7 fully by screwed connection main body 1 retaining ring 8 rear ends, are used to prevent that retaining ring 8 from releasing; The external surface of locating piece 10 has a boss, is convenient to that the utility model is gone into the well smoothly and upper lifting pipe post generation certain load during by casing coupling; 2 pairs of uniform tapped through holes are arranged at main body 1 top, symmetry is equipped with shear pin 3 and pressure cap 6 respectively, the cylindrical end of shear pin 3 is positioned at the following annular groove 16 of fuse 13, the location that is used for fuse 13, spring 5 and spacer pin 4 are arranged in the pressure cap 6, be set between main body 1 tapped through hole and the fuse 13, and spacer pin 4 one ends withstand on the fuse outer wall, be used for fuse 13 and move down the back and insert and go up in the annular groove 15 to carry out spacing to fuse; Locating piece 10 two ends outer walls are with elastic ring 9, are used to make locating piece 10 to finish the tubing string school and reset after dark; Between fuse 13 two ends outer walls and main body 1 inwall sealing ring 2 and 14 are housed, are used for the tubing string inner sealing; Fuse 13 top external diameters are used to produce area difference greater than lower outer diameter, shear pin 3 can be cut off when building the pressure; Between fuse 13 upper surfaces and endoporus smooth bevel is arranged, be used for dropping into building the pressure and seal behind the cover, rely on impact or build the pressure shear pin is cut off.

Measured tubing string before going into the well, the utility model connects with the tubing string G.I.H with oil pipe, below the short sleeve pipe nipple, and the upper lifting pipe post, when the utility model passed through casing coupling, load changed, ground tensiometer recorder record payload; Because ordinary casing length is about 10m, and short sleeve length is about 5m, therefore, when ground tensiometer recorder writes down twice varying loading, putting forward distance on the tubing string is about 5m, just show that the utility model is exactly short sleeve pipe nipple position in the down-hole physical location this moment, and owing to the position of short sleeve pipe nipple is determined, can determine to of the present utility model real depth from well head this moment.Short sleeve pipe nipple position and design attitude of the present utility model are not far from one another, adjust tubing nipple by ground, can be with the downhole tool on the utility model and the tubing string accurately down to design attitude, and the school of finishing downhole tool is dark.Beat fluid pressure by oil pipe, build the pressure more than the 5MPa, shear pin 3 can be cut off, it is spacing that fuse 13 comes downwards to main body 1 endoporus lower step place, and simultaneously pressure cap 6 inner springs 5 are released spacer pin 4, is stuck on the fuse 13 in the annular groove 15, prevents to move on the fuse 13.Leaf springs 11 lose interior support in the locating piece 10, and locating piece 10 is received under elastic ring 9 effects, and external diameter is consistent with common downhole tool external diameter, and when later upper lifting pipe post passes through casing coupling, the utility model will no longer produce sudden load change, help tubing string and steadily trip out.If the oil pipe leakage does not possess the condition of building the pressure, can in oil pipe, drop into sucker rod substitute 3m～5m, can pin be cut off by bump.

Claims (3)

1, install deeply in the mechanical school of a kind of down-hole string, mainly form by main body (1), retaining ring (8), elastic ring (9), locating piece (10), leaf spring (11) and fuse (13) etc., the fuse (13) of the interior suit of main body (1) is connected by shear pin (3), be provided with sealing ring (2 and 14) between fuse (13) two ends outer wall and main body (1) inwall, it is characterized in that:

A, main body (1) outer wall middle part is by being equipped with being connected of cap (7) and retaining ring (8) and main body (1), to place in the rectangular recess of main body (1) by locating piece (10) and the leaf spring (11) that screw (12) connects, leaf spring (11) two ends are sitting on the boss of fuse (13);

B, main body (1) top have 2 pairs of uniform tapped through holes at least, wherein has 1 pair of shear pin (3) that is used to connect main body (1) and fuse (13) at least, have at least 1 pair to be used to insert spacer pin (4), the middle part outer wall has 1 pair of uniform rectangular recess at least, and its length direction parallels with main body (1) axis.

2, install deeply in the mechanical school of down-hole string according to claim 1, it is characterized in that: fuse (13) external wall of upper portion is furnished with 2 road annular grooves, the width of wherein going up annular groove (15) is bigger than the width of following annular groove (16), and the width of following annular groove (16) is less than the diameter of spacer pin (4); There are 2 boss at fuse (13) middle part; Fuse (13) top external diameter is greater than lower outer diameter, and the internal diameter up and down of main body (1) is complementary with it; Between fuse (13) upper surface and endoporus smooth bevel is arranged.

3, install deeply in the mechanical school of down-hole string according to claim 1 and 2, and it is characterized in that: external surface has locating piece (10) the two ends outer wall of a boss to be with elastic ring (9).