CN2457338Y

CN2457338Y - Dowdhole tool and well head equipment for well feeding solid chemicals

Info

Publication number: CN2457338Y
Application number: CN 00241627
Authority: CN
Inventors: 曹允良
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-06-28
Filing date: 2000-06-28
Publication date: 2001-10-31
Anticipated expiration: 2010-06-28

Abstract

The utility model relates to a downhole tool and well head apparatus for feeding solid chemicals into a well, which solves the problems of high cost and large management difficulty. The utility model is characterized in that a spring steel sheet (5) and a spring (2) are respectively fixed between upper and lower slide rings (3, 9) and on the upper slide ring, the upper and lower slide rings (3, 9) are sheathed on a center pipe (4), the center of the center pipe (4) is sheathed with a folding steel mesh (7) positioned in the steel sheet (5) and limited by upper and lower limit rings on the center pipe (4). The utility model is characterized in that a three-way valve (19) is tipsily provided with a tipsy body (20) with a concave cambered surface. The utility model has the advantages of low cost and easy management.

Description

Oil well adds the downhole tool and the wellhead equipment of solid chemicals

The utility model relates to used means and the matching used wellhead equipment of adding in a kind of oil well production, belongs to downhole tool and wellhead equipment that oil well adds solid chemicals.

At present, oil well phenomenons such as wax deposition, fouling can occur in the actual production running, needs to add some chemical agents and realizes clear wax control, clear antiscale or purposes such as viscosity reduction, pour point depression.And liquid preparation is adopted in existing dosing mostly, needs equipment such as measuring pump, heating tube, power supply, the cost height, and management difficulty is big.

The purpose of this utility model is to avoid the deficiency of above-mentioned technology, and provides a kind of oil well ring set space with low cost to add the downhole tool and the supporting wellhead equipment of Solid-state Chemistry medicament.

The purpose of this utility model can reach by the following technical programs: this oil well ring set space adds the downhole tool of Solid-state Chemistry medicament and is made up of last lower contact, central tube, it is characterized in that: be enclosed within the slide down interannular on the central tube and go up on the slip ring intrinsic elastic steel sheet and spring respectively, central tube be with between two parties be positioned at steel disc and by the spacing ring up and down on the central tube spacing folding steel mesh.

Above-mentioned folding steel mesh (7) constitutes as follows:

In in be fixed into the built-in covering of the fan of screen cloth by radial girders between the outer arc muscle, be hinged to inside and outside two anchor rings between covering of the fan, wherein outer ring surface can along in the arc muscle folding, and axially be symmetrically distributed with elastic steel sheet at outer ring surface upper edge central point.Periphery is 4～8 along the number of the steel disc that central point axially is symmetrically distributed.

In order to implement this downhole tool, supporting wellhead equipment is made up of last tail gates, short circuit, threeway, and last tail gates are communicated with by short circuit, and threeway is communicated with tail gates, it is characterized in that: the tilting italic that cancave cambered surface is arranged in threeway.

The utility model has following advantage than above-mentioned prior art: because this downhole tool is connected on the oil well pipe, the management relative difficulty is little; Moreover folding steel mesh is filled in the ring set space all the time, along with the chemical agent of accepting adding, removes instrument conveniently, freely.

Accompanying drawing 1 is that wellhead equipment structure of the present utility model is cutd open figure;

Accompanying drawing 2 is B-B sectional views of Fig. 1;

Accompanying drawing 3 is that downhole tool structure of the present utility model is cutd open figure;

Accompanying drawing 4 is floor map of the folding steel mesh 7 of Fig. 3.

Below in conjunction with accompanying drawing the utility model is further described:

As shown in Figure 3, this oil well ring set space adds the downhole tool of Solid-state Chemistry medicament by last lower contact (1,10), central tube 4 is formed, intrinsic spacing ring (6 up and down on the central tube 4,8) and be with up and down slip ring (3,9), make slip ring (3 up and down, 9) can be pipe 4 outer being free to slide, up and down between the slip ring (3,9) and go up intrinsic elastic steel sheet 5 of difference and spring 2 on the slip ring 3, make elastic steel sheet 5 both play the effect of leaf spring, simultaneously play guide effect in the process tripping out and be lowered to, central tube 4 be with between two parties be positioned at steel disc 5 and by about spacing ring (6,8) spacing folding steel mesh 7.And folding steel mesh 7 constitutes (shown in Figure 4) as follows:

Outer arc muscle (11 in interior, 12,13) be fixed into a covering of the fan by radial girders 14 between, in this covering of the fan, have in screen cloth 15 is built in, form some cells, be hinged to inside and outside two anchor rings between the covering of the fan, wherein outer ring surface can along in arc muscle 12 folding, and axially be symmetrically distributed with 4～8 elastic steel sheets 5 at outer ring surface upper edge central point 22.

In order to bring into play the purpose of this downhole tool, can use and the supporting wellhead equipment of this downhole tool (Fig. 1 combines shown in Figure 2), this supporting wellhead equipment is by last tail gates (16,18), short circuit 17, threeway 19 is formed, last tail gates (16,18) be communicated with by short circuit 17, wherein short circuit 17 bottom diameters should be slightly larger than the external diameter of the Solid-state Chemistry particle of filling according to needs of production, in order to control the medicament falling speed and to avoid card to block up the dosing passage, threeway 19 is communicated with tail gates 18, the tilting italic 20 that cancave cambered surface is arranged is fixed italic 20 with screw 21 in threeway 19, makes the continuous clip of bared end and the big four of italic 20.

During reality filling Solid-state Chemistry particle medicament, close tail gates 18, open upper lock gate 16, the filling medicament, this moment, medicament was present in 17 li of short circuits; Close upper lock gate 16 then, open tail gates 18, the solid particle medicament enters 20 li of italics by short circuit 17, tail gates 18, threeway 19 under action of gravity, thereby enter in the big four of well head, enter into the ring set space, drop on the folding steel mesh 7, finish a dosing.Since this downhole tool can be connected the top of oil well pump or below, moreover this downhole tool is the steel net structure of elastic foldable, make and remove freely, make folding steel mesh 7 be filled in all the time in the ring set space simultaneously, along with the Solid-state Chemistry medicament of accepting adding, the degree of depth that makes chemical agent be suspended in design is brought into play its effect, and is with low cost, management difficulty is little, is fit to promote the use of.

Claims

1, a kind of oil well adds the downhole tool and the wellhead equipment of solid chemicals, by last lower contact (1,10), central tube (4) is formed, it is characterized in that: be enclosed within the slip ring up and down (3 on the central tube (4), 9) reach between and go up slip ring (3) upward difference intrinsic elastic steel sheet (5) and spring (2), central tube (4) be with between two parties be positioned at steel disc (5) and by the spacing ring up and down (6,8) on the central tube (4) spacing folding steel mesh (7).

2, downhole tool according to claim 1 is characterized in that: folding steel mesh (7) constitutes as follows:

Outer arc muscle (11 in interior, 12,13) be fixed into the built-in covering of the fan of screen cloth (15) by radial girders (14) between, be hinged to inside and outside two anchor rings between covering of the fan, wherein outer ring surface can along in arc muscle (12) folding, and axially be symmetrically distributed with elastic steel sheet (5) at outer ring surface upper edge central point (22).

3, downhole tool according to claim 2 is characterized in that: periphery is 4～8 along the number of the steel disc (5) that central point (22) axially is symmetrically distributed.

4, implement the employed supporting wellhead equipment of the described downhole tool of claim 1, by last tail gates (16,18), short circuit (17), threeway (19) are formed, last tail gates (16,18) be communicated with by short circuit (17), threeway (19) is communicated with tail gates (18), it is characterized in that: the tilting italic (20) that cancave cambered surface is arranged in threeway (19).