CN111980611A - Underground suspension device for sucker rod and pump depth adjusting method for oil well pump - Google Patents
Underground suspension device for sucker rod and pump depth adjusting method for oil well pump Download PDFInfo
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- CN111980611A CN111980611A CN202010768147.0A CN202010768147A CN111980611A CN 111980611 A CN111980611 A CN 111980611A CN 202010768147 A CN202010768147 A CN 202010768147A CN 111980611 A CN111980611 A CN 111980611A
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- suspension
- sucker rod
- suspension body
- cylinder
- inner suspension
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
Abstract
The invention relates to a sucker rod underground suspension device and an oil well pump depth adjusting method. The suspension device comprises a suspension cylinder body and an inner suspension body, wherein the inner cavity of the suspension cylinder body is vertically communicated, and the upper end and the lower end of the suspension cylinder body are both used for being connected with an oil pipe; the lower end of the inner suspension body is provided with a lower connecting part which is detachably connected with a sucker rod to be suspended, and the upper end of the inner suspension body is provided with an upper connecting part which is detachably connected with a conveying rod for conveying the sucker rod into a well or taking the sucker rod out of the well; the suspension cylinder is provided with a limiting part for limiting the downward movement of the inner suspension body, the inner suspension body is provided with a stop part matched with the limiting part, the upper connecting part of the inner suspension body is in threaded connection with the conveying rod, and a rotation stopping structure for limiting the rotation of the inner suspension body relative to the suspension cylinder is arranged at the matching position of the limiting part of the suspension cylinder and the stop part of the inner suspension body.
Description
Technical Field
The invention relates to a sucker rod underground suspension device and an oil well pump depth adjusting method.
Background
The most common is a sucker-rod tubular pump, which is put into the well by a certain depth with an oil pipe, and then put the plunger of the oil pump into the tubular pump with the sucker rod, and then the production is started. In the production process, measures such as deep pumping, layer adjustment and the like are required to be implemented due to the reasons of poor formation liquid supply, high water content of the current production layer and the like, the measures need to move the oil pipe downwards or upwards, and before moving the oil pipe downwards or upwards and the plunger of the oil well pump, the oil pumping rod and the plunger of the oil well pump are processed, when the pumping depth is not too deep and the well is completely a steel sucker rod, the common method is to take out a part of the sucker rod in a reverse buckling way, put the rest sucker rod in the oil pipe in a free state, but when the pump hanger is deep and the carbon fiber sucker rod is arranged in the well, because the carbon fiber sucker rod has poor pressure resistance, it can be damaged when being placed in an oil pipe in a free state, and in order to avoid the damage of the carbon fiber sucker rod, all the sucker rods and oil well pump plungers in a well can be pulled out in the well repairing process, then a part of the oil pipe is moved downwards or lifted upwards, and then the sucker rod and the plunger of the oil well pump are put into the oil pipe column.
Although the carbon fiber sucker rod can be prevented from being damaged by the mode, all the sucker rods and oil well pump plungers are lifted out, so that the workload is greatly increased undoubtedly, and the well repairing efficiency is reduced.
Disclosure of Invention
The invention aims to provide a sucker rod underground suspension device which is used for solving the problem of low well repair efficiency caused by lifting all sucker rods and plungers out of a well to avoid damage of carbon fiber sucker rods in the well repair operation of a sucker rod pump oil well;
in addition, the invention also aims to provide an oil well pump depth adjusting method, which is used for solving the problem of low well repair efficiency caused by lifting all sucker rods and plungers out of a well to avoid damage of carbon fiber sucker rods in the well repair operation of a sucker rod pump.
The underground suspension device of the sucker rod adopts the following technical scheme:
this sucker rod hangs device in pit includes:
the inner cavity of the suspension cylinder is communicated up and down, and the upper end and the lower end of the suspension cylinder are both used for being connected with an oil pipe;
the lower end of the inner suspension body is provided with a lower connecting part which is detachably connected with a sucker rod to be suspended, and the upper end of the inner suspension body is provided with an upper connecting part which is detachably connected with a conveying rod for conveying the sucker rod into a well or taking the sucker rod out of the well;
the suspension cylinder body is provided with a limiting part for limiting the downward movement of the inner suspension body, and the inner suspension body is provided with a stop part matched with the limiting part;
the upper connecting part of the inner suspension body is in threaded connection with the conveying rod, and a rotation stopping structure for limiting the inner suspension body to rotate relative to the inner suspension body is arranged at the matching position of the limiting part of the suspension cylinder body and the stop part of the inner suspension body.
The underground suspension device of the sucker rod has the advantages that: when the suspension device is used, the suspension cylinder body is lowered to a set position along with an oil pipe, a part of the sucker rod in the well is lifted upwards and is unloaded to the part of the sucker rod extending out of the well, the residual sucker rod in the well is the sucker rod to be suspended, the sucker rod to be suspended is fixedly connected to the lower connecting part of the inner suspension body, the upper connecting part of the inner suspension body is connected to the conveying rod, then the conveying rod conveys the inner suspension body and the sucker rod to be suspended into the well until the inner suspension body is blocked with the suspension cylinder body, then the conveying rod is disconnected with the inner suspension body, the conveying rod is lifted out, and the sucker rod to be suspended is suspended in the well under the matching of the inner suspension body and the blocking of the suspension cylinder body. Therefore, when the oil pipe needs to be moved downwards or lifted upwards, all the sucker rods and the oil pump plungers do not need to be lifted out of the well, the workload of construction is greatly reduced, and the well repairing efficiency can be greatly improved.
Further, hang the barrel and include top connection and lower clutch, the upper end of top connection be used for with hang the oil pipe connection of barrel top, the lower extreme of lower clutch be used for with hang the oil pipe connection of barrel below, top connection and the fixed sealing connection of lower clutch, spacing portion sets up the upper end at the lower clutch.
The improved effect is as follows: set up like this, be convenient for set up spacing portion on hanging the barrel.
Further, the upper joint and the lower joint are in threaded connection.
The improved effect is as follows: by the arrangement, the upper joint and the lower joint are connected conveniently.
Furthermore, one of the stop part of the inner suspension body and the limit part of the suspension cylinder body is provided with a convex tooth, the other is provided with a tooth groove, the inner suspension body and the suspension cylinder body realize rotation stopping through the convex tooth and the tooth groove, and the convex tooth and the tooth groove form a rotation stopping structure.
The improved effect is as follows: the rotation stopping structure is simple and easy to realize.
Furthermore, a convex tooth and a tooth socket are defined as a group of tooth socket groups, at least two groups of tooth socket groups are arranged at the matching position of the limiting part of the suspension cylinder body and the stopping part of the inner suspension body, and each tooth socket group is arranged along the circumferential direction of the inner suspension body.
The improved effect is as follows: by the arrangement, one convex tooth can be prevented from being damaged due to over-high stress.
Furthermore, all the tooth socket groups are uniformly distributed along the circumferential direction of the inner suspension body.
The improved effect is as follows: the stress of each convex tooth is ensured to be more uniform, and further, the damage of individual convex teeth caused by overlarge stress is prevented.
Further, the convex teeth are trapezoidal teeth.
The improved effect is as follows: the trapezoidal tooth has high strength and good rotation stopping effect.
Furthermore, the tooth socket is a through groove which penetrates through the corresponding structure along the radial direction of the suspension cylinder body.
The improved effect is as follows: the tooth space is arranged in such a way, so that the difficulty in arranging the tooth space can be reduced.
Furthermore, before the convex teeth and the tooth grooves are oppositely inserted, the edges of the tooth surfaces of the convex teeth facing the tooth grooves and the notches of the tooth grooves facing the convex teeth are both set to be arc-shaped so as to guide the convex teeth to enter the tooth grooves.
The improved effect is as follows: the convex teeth can conveniently enter the tooth grooves.
Further, the lower connecting part of the inner suspension body is in threaded connection with the sucker rod to be suspended.
The improved effect is as follows: the threaded connection is convenient and stable.
The invention relates to a method for adjusting the pump depth of an oil well pump, which comprises the following steps:
connecting the suspension cylinder body between oil pipe columns in series;
lifting the sucker rod and the plunger of the oil well pump, removing the upper part of the sucker rod, and connecting the upper end of the remaining sucker rod to be hung with the inner hanging body;
the lower end of the inner suspension body is detachably connected with a sucker rod to be suspended, the upper end of the inner suspension body is provided with a conveying rod which is detachably connected with the sucker rod to be suspended and is used for conveying the sucker rod into a well or out of the well, the inner cavity of the suspension cylinder body is communicated up and down, the suspension cylinder body is provided with a limiting part which limits the downward movement of the inner suspension body, and the inner suspension body is provided with a stopping part which is matched with the limiting part;
the remaining sucker rod to be hung and the plunger of the oil well pump are lowered into the oil pipe through the conveying rod, and the conveying rod is taken out after the stop part and the limiting part of the inner hanging body are hung on the hanging cylinder in a matching way;
connecting or removing an oil pipe, and adjusting the depth of the pump cylinder of the oil well pump in the oil well;
the inner suspension body, the sucker rod and the oil pump plunger which are connected with the inner suspension body are lifted up through the conveying rod, and the inner suspension body is detached;
and connecting the remaining oil pumping rods to be hung and the upper ends of the oil pumping pump plungers with the oil pumping rods with proper lengths, and lowering the oil pumping pump plungers into the oil well pump cylinder.
The invention has the beneficial effects that: after part of the sucker rod is disassembled, the remaining sucker rod to be hung in the oil pipe through the inner hanging body, the oil pipe on the upper side of the hanging barrel is disassembled, or the oil pipe on the upper side of the hanging barrel is continuously connected with the oil pipe, the position of the oil pump cylinder can be adjusted, then according to the position of the oil pump cylinder, the length of the sucker rod is adjusted to enable the sucker rod plunger to be placed at the position corresponding to the oil pump cylinder, the whole process does not need to take all the sucker rods and the oil pump plungers out of the oil pipe, the workload of the oil pump for adjusting the depth of the pump is greatly reduced, and meanwhile, the problem that the sucker rod and the oil pump plunger are directly leaned in the oil pipe to cause the compression damage of the carbon fiber sucker rod in the.
Drawings
FIG. 1 is a schematic structural view of an embodiment 1 of a downhole suspension device for sucker rods according to the present invention;
fig. 2 is a cross-sectional view a-a of the structure of fig. 1.
In the figure: 1-upper joint, 2-lower joint, 3-sealing ring, 4-inner suspension body, 5-upper connecting part, 6-lower connecting part, 7-inner cavity, 8-convex tooth and 9-tooth groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
as shown in figure 1, the underground suspension device of the sucker rod comprises a suspension cylinder body and an inner suspension body 4, wherein the suspension cylinder body comprises an upper joint 1 and a lower joint 2, the upper joint 1 and the lower joint 2 are of a cylindrical structure and are provided with inner cavities 7 which are communicated up and down, the lower end of the upper joint 1 is provided with an inner thread, the upper end of the lower joint 2 is provided with an outer thread matched with the inner thread at the lower end of the upper joint 1, and the upper joint 1 and the lower joint 2 are fixedly connected together through threads.
As shown in fig. 1, two ring grooves are formed in the outer peripheral surface of the lower joint 2 at the lower side of the external thread, a seal ring 3 is installed in each ring groove, when the upper joint 1 and the lower joint 2 are connected together, the lower end of the upper joint 1 covers the seal ring 3 installed on the lower joint 2 and extrudes the seal ring 3, and the upper joint 1 and the lower joint 2 are connected in a sealing manner through the seal ring 3.
The upper end of the upper joint 1 is provided with internal threads, and the upper joint 1 is fixedly connected with an oil pipe (not shown) at the upper side through the internal threads at the upper end when in use; the lower end of the lower joint 2 is provided with external threads, and when in use, the lower joint 2 is connected and fixed with an oil pipe (not shown) at the lower side through the external threads at the lower end; the suspension cylinder is connected between the oil pipe columns in a threaded connection mode and is lowered into a set position in the well along with the oil pipe columns when in use.
As shown in fig. 1 and 2, the upper end of the lower joint 2 extends into the inner cavity 7 of the upper joint 1, six tooth sockets 9 are formed on the lower joint 2 by sinking downwards from the upper end surface of the lower joint, the tooth sockets 9 penetrate through the cylinder wall of the lower joint 2 along the radial direction of the lower joint 2, and the six tooth sockets 9 are uniformly distributed along the circumferential direction of the lower joint 2.
As shown in fig. 1, the inner suspension body 4 can be supported by the lower joint 2 to be suspended from the upper end of the lower joint 2. The inner suspension body 4 is generally cylindrical and has a radial maximum dimension smaller than the radial minimum dimension of the inner cavity 7 of the upper joint 1, so that the inner suspension body 4 can enter the inner cavity 7 of the upper joint 1 and be suspended at the upper end of the lower joint 2.
As shown in fig. 1 and 2, six convex teeth 8 are arranged in the middle of the inner suspension body 4, in this embodiment, the convex teeth are trapezoidal teeth, and in other embodiments, the convex teeth may also be triangular teeth, rectangular teeth, or semicircular teeth, etc.
Six convex teeth 8 are uniformly distributed along the circumferential direction of the inner suspension body 4, and the six convex teeth 8 on the inner suspension body 4 are respectively in one-to-one correspondence with the six tooth sockets 9 on the lower joint 2 and are adaptive to the sizes of the convex teeth.
The convex teeth 8 on the inner suspension body 4 can be inserted into the tooth grooves 9 on the lower joint 2, after the convex teeth 8 on the inner suspension body 4 extend into the tooth grooves 9 on the lower joint 2, the groove bottom of the tooth grooves 9 and the downward side faces of the convex teeth 8 are mutually blocked to realize that the inner suspension body 4 is suspended at the upper end of the lower joint 2, the groove bottom of the tooth grooves 9 forms a limiting part on the suspension cylinder body, and the downward side faces of the convex teeth 8 form a blocking part on the inner suspension body 4.
Meanwhile, after the convex teeth 8 on the inner suspension body 4 are inserted into the tooth grooves 9 on the lower joint 2, the inner suspension body 4 cannot rotate relative to the lower joint 2 under the mutual matching of the convex teeth 8 and the tooth grooves 9, the convex teeth 8 and the tooth grooves 9 form a rotation stopping structure at the matching position of the limiting part of the suspension cylinder and the stopping part of the inner suspension body 4, one convex tooth 8 and one tooth groove 9 form a tooth groove group, and six tooth groove groups are shared in the embodiment.
In order to facilitate the convex teeth 8 to be inserted into the tooth grooves 9, the downward side edges of the convex teeth 8 are processed into arc-shaped surfaces, and the edge of the notch at the upper end of the tooth grooves 9 is also provided with the arc-shaped surfaces.
As shown in fig. 1, the inner suspension body 4 has an upper connection part 5 at the upper end and a lower connection part 6 at the lower end, the lower connection part 6 being provided with a threaded blind hole for screwing with a sucker rod to be suspended, the upper connection part 5 likewise being provided with a threaded blind hole for screwing with a conveying rod (not shown in the figure). The conveying rod in the embodiment is composed of the on-site sucker rod, and a special conveying rod does not need to be additionally manufactured.
This sucker rod is hanging device in pit uses with the transfer chain in the tubing string in the cooperation well, when using:
the hanging cylinder is connected between oil pipe columns and extends into a set position in a well along with the oil pipe columns, when the position of a pump cylinder of an oil well pump needs to be adjusted, the oil pipe column needs to be lifted up or lowered down, firstly, a sucker rod and a plunger of the oil well pump in the well are moved up, part of the sucker rod is removed according to design, the lower end of the inner hanging body 4 is fixedly connected with the upper end of the residual sucker rod in the well, then, a conveying rod is connected with the upper end of the inner hanging body 4, the inner hanging body 4 is conveyed downwards into the well through the conveying rod, meanwhile, the sucker rod and the plunger of the oil well pump still positioned in the well move downwards along with the inner hanging body 4, when the inner hanging body 4 moves to the hanging cylinder connected between the oil pipe columns, the convex teeth 8 on the inner hanging body 4 extend into the tooth grooves 9 in the hanging cylinder 4, the downward side surfaces of the convex teeth 8 are blocked by the upward groove bottoms of the tooth grooves 9, thereby leading the sucker rod and the plunger of the oil well pump connected with the lower end of the inner suspension body 4 to be suspended in the well.
Then the conveying rod is rotated reversely, because the inner suspension body 4 and the suspension cylinder body cannot rotate relatively under the matching of the convex teeth 8 and the tooth grooves 9, the conveying rod can withdraw from the threaded blind hole in the upper connecting part 5 of the inner suspension body 4, so that the connection between the conveying rod and the inner suspension body 4 is released, then the conveying rod is moved out of the well, and the sucker rod is suspended in the well.
Therefore, under the condition of containing the carbon fiber sucker rod, the sucker rod and the oil pump plunger are hung on the suspension cylinder body, so that the condition that the carbon fiber sucker rod is pressed can not occur, all the sucker rods and the oil pump plungers are not required to be moved out of a well, the difficulty of site construction is greatly reduced, and the efficiency of well repair work is improved.
When the oil pipe column moves downwards or upwards to a certain position, the conveying rod is lowered into the well again, when the lower end of the conveying rod contacts a threaded blind hole in the upper connecting part 5 of the inner suspension body 4, the conveying rod is rotated in the forward direction, the lower end of the conveying rod extends into the threaded blind hole to realize the connection and fixation of the conveying rod and the inner suspension body 4, then the conveying rod is moved upwards, the conveying rod can pull the inner suspension body 4, the sucker rod and the oil pump plunger which are connected to the lower end of the inner suspension body 4 to move upwards together, when the inner suspension body 4 moves out of the well, the inner suspension body 4 is detached from the oil pump rod in the well, according to the design, the upper end of the oil pump rod in the well is connected with other oil pump rods, and then the oil pump plunger enters the oil pump barrel.
the difference from example 1 is that:
the suspension cylinder body in the embodiment is of an integral cylindrical structure, the upper end of the suspension cylinder body is provided with an internal thread which is used for being in threaded connection with an oil pipe above the suspension cylinder body, the lower end of the suspension cylinder body is provided with an external thread which is used for being in threaded connection with an oil pipe below the suspension cylinder body, and the suspension cylinder body is connected between oil pipe columns in a threaded connection mode.
In this embodiment, the limiting part can be arranged at any position in the suspension cylinder body, for example, an annular boss can be arranged in an inner cavity of the suspension cylinder body, the annular boss protrudes inwards along the radial direction of the suspension cylinder body, then a tooth socket matched with a convex tooth on the inner suspension body is arranged on the upper part of the annular boss, and certainly, the tooth socket at the position cannot be a through groove.
the difference from example 1 is that:
the convex tooth in this embodiment sets up the upper end at the lower clutch of hanging the barrel, and the tooth's socket sets up on the internal suspension body, sets up annular convex part in the middle part of internal suspension body, and annular convex part is outwards protruded along the radial of internal suspension body, then set up the tooth's socket with the convex tooth adaptation in the lower part of annular convex part can, the tooth's socket can not link up annular convex part along upper and lower direction.
In this case, the groove bottom on the upper side of the tooth groove in the annular convex part forms a stop part on the inner suspension body, and the upper side surface of the convex tooth on the lower joint forms a limit part on the suspension cylinder body; the upper limit and the lower limit and the circumferential rotation stop of the hanging cylinder body and the inner hanging body can be realized.
the difference from example 1 is that:
the top connection and the lower connection in this embodiment pass through bolt fixed connection, specifically are: the lower extreme of top connection can the plug bush cooperation with the upper end of bottom connection, behind the plug bush, plug bush cooperation department top connection between them is in the outside, the bottom connection is in the inboard, set up a plurality of shoulder holes along its circumference on the top connection, the shoulder hole is along the radial extension of top connection, the shoulder hole runs through the section of thick bamboo wall of top connection, the aperture of shoulder hole is big-end-up, it sets up the screw hole to correspond the shoulder hole on the top connection on the bottom connection, the screw hole does not run through the section of thick bamboo wall of bottom connection, then use supporting bolt with both fixed connection, after the bolted connection, the bolt head of bolt is in the great hole section in aperture of shoulder hole, and can not stretch out the outside of top connection.
the difference from example 1 is that:
the rotation stopping structure in this embodiment is in other structural forms, specifically: the middle part of the inner suspension body is provided with an annular convex part, the lower side surface of the annular convex part is provided with a plurality of downwardly extending convex columns, each convex column is arranged along the circumferential direction of the annular convex part, the upper end of the lower joint is provided with a plurality of blind holes corresponding to the convex columns, the size of the blind holes is matched with the size of the convex columns, and when the inner suspension body is used, the convex columns can be inserted into the blind holes, so that the rotation stopping of the inner suspension body and the lower joint is realized.
the difference from example 1 is that:
in this embodiment, the number of the tooth groove sets is one, that is, only one convex tooth is arranged on the inner suspension body, only one tooth groove is correspondingly arranged at the upper end of the lower joint, and then the inner suspension body can be matched with the suspension cylinder body by the locking of the convex tooth and the tooth groove.
Of course, in other embodiments, other numbers of tooth socket sets may be provided, such as two, three, four, five, etc., and may be used.
Example 7 of the sucker rod downhole suspension device provided by the invention:
the difference from example 1 is that:
the six groups of tooth groove groups in the embodiment are not uniformly distributed along the circumferential direction of the inner suspension body, namely, the tooth groove groups are not uniformly distributed along the circumferential direction of the inner suspension body, but can also be used.
the difference from example 1 is that:
the tooth grooves arranged on the lower joint in the embodiment do not penetrate through the cylinder wall of the lower joint at the corresponding position along the radial direction of the lower joint when being arranged, and the tooth grooves can also be used.
the difference from example 1 is that:
in the embodiment, the edge of the downward side face of the convex tooth on the inner suspension body is not processed into an arc-shaped face, and the edge of the notch at the upper end of the tooth groove is not also processed into an arc-shaped face and can be used.
Embodiment 10 of the sucker rod downhole suspension device provided by the invention:
the difference from example 1 is that:
in this embodiment, the annular groove for installing the seal ring at the connection position of the upper joint and the lower joint may be formed in the inner wall surface of the upper joint, and then the seal ring is installed in the annular groove.
In the embodiment of the method for adjusting the pump depth of the oil well pump provided by the invention, the adjustment of the pump depth of the oil well pump is realized through the underground sucker rod suspension device in any one of the embodiments, and the method comprises the following steps:
the suspension cylinder is connected in series between oil pipe columns in advance, the sucker rod and the plunger of the oil well pump are lifted, the part of the sucker rod which is close to the upper end is removed, and the upper end of the remaining sucker rod to be suspended is connected with the inner suspension body;
the lower end of the inner suspension body is detachably connected with a sucker rod to be suspended, the upper end of the inner suspension body is provided with a conveying rod which is detachably connected with the sucker rod to be suspended and is used for conveying the sucker rod into a well or out of the well, the inner cavity of the suspension cylinder body is communicated up and down, the suspension cylinder body is provided with a limiting part which limits the downward movement of the inner suspension body, and the inner suspension body is provided with a stopping part which is matched with the limiting part;
the remaining sucker rod to be hung and the plunger of the oil well pump are lowered into the oil pipe through the conveying rod, and the conveying rod is taken out after the stop part and the limiting part of the inner hanging body are hung on the hanging cylinder in a matching way;
connecting or removing an oil pipe, and adjusting the depth of the pump cylinder of the oil well pump in the oil well;
the inner suspension body, the sucker rod and the oil pump plunger which are connected with the inner suspension body are lifted up through the conveying rod, and the inner suspension body is detached;
and connecting the remaining oil pumping rods to be hung and the upper ends of the oil pumping pump plungers with the oil pumping rods with proper lengths, and lowering the oil pumping pump plungers into the oil well pump cylinder.
In other embodiments, the inner suspension body can be provided with a hook nose, and the connection between the conveying rod and the inner suspension body is realized through the hook mode by arranging the hook matched with the hook nose on the conveying rod.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. Sucker rod is linkage in pit, characterized by includes:
the inner cavity of the suspension cylinder is communicated up and down, and the upper end and the lower end of the suspension cylinder are both used for being connected with an oil pipe;
the lower end of the inner suspension body is provided with a lower connecting part which is in threaded connection with a sucker rod to be suspended, and the upper end of the inner suspension body is provided with an upper connecting part which is detachably connected with a conveying rod for conveying the sucker rod into a well or out of the well;
the suspension cylinder body is provided with a limiting part for limiting the downward movement of the inner suspension body, and the inner suspension body is provided with a stop part matched with the limiting part;
the upper connecting part of the inner suspension body is in threaded connection with the conveying rod, and a rotation stopping structure for limiting the inner suspension body to rotate relative to the inner suspension body is arranged at the matching position of the limiting part of the suspension cylinder body and the stop part of the inner suspension body.
2. The downhole suspension device for the sucker rod of claim 1, wherein the suspension cylinder comprises an upper joint and a lower joint, the upper end of the upper joint is used for being connected with an oil pipe above the suspension cylinder, the lower end of the lower joint is used for being connected with an oil pipe below the suspension cylinder, the upper joint and the lower joint are fixedly and hermetically connected, and the limiting part is arranged at the upper end of the lower joint.
3. The sucker rod downhole suspension of claim 2 wherein the upper and lower subs are threadably connected.
4. The downhole suspension device for the sucker rod as claimed in claim 1, 2 or 3, wherein one of the stop part of the inner suspension body and the limit part of the suspension cylinder body is provided with a convex tooth, the other is provided with a tooth groove, the inner suspension body and the suspension cylinder body realize rotation stopping through the convex tooth and the tooth groove, and the convex tooth and the tooth groove form the rotation stopping structure.
5. The downhole suspension device for sucker rod of claim 4 wherein one of the teeth and one of the teeth grooves is defined as a set of teeth grooves, and at least two sets of teeth grooves are provided at the fitting position of the limiting portion of the suspension cylinder and the stopping portion of the inner suspension body, each set of teeth grooves being arranged along the circumferential direction of the inner suspension body.
6. The downhole suspension device for sucker rod of claim 5 wherein the spline sets are uniformly spaced along the circumference of the inner suspension body.
7. The sucker rod downhole suspension of claim 4 wherein the raised teeth are trapezoidal shaped teeth.
8. The sucker rod downhole suspension device of claim 4, wherein the splines are through slots extending through the corresponding structure in a radial direction of the suspension cylinder.
9. The sucker rod downhole suspension of claim 4, wherein before the spur is inserted into the slot, the edge of the tooth surface of the spur facing the slot and the notch of the slot facing the spur are both curved to guide the spur into the slot.
10. The method for adjusting the pump depth of the oil well pump is characterized by comprising the following steps of:
connecting the suspension cylinder in series between oil pipe columns, lifting the sucker rod and the plunger of the oil well pump, removing the part of the sucker rod above, and connecting the inner suspension body to the upper end of the remaining sucker rod to be suspended;
the lower end of the inner suspension body is detachably connected with a sucker rod to be suspended, the upper end of the inner suspension body is provided with a conveying rod which is detachably connected with the sucker rod to be suspended and is used for conveying the sucker rod into a well or out of the well, the inner cavity of the suspension cylinder body is communicated up and down, the suspension cylinder body is provided with a limiting part which limits the downward movement of the inner suspension body, and the inner suspension body is provided with a stopping part which is matched with the limiting part;
the remaining sucker rod to be hung and the plunger of the oil well pump are lowered into the oil pipe through the conveying rod, and the conveying rod is taken out after the stop part and the limiting part of the inner hanging body are hung on the hanging cylinder in a matching way;
connecting or removing an oil pipe, and adjusting the depth of the pump cylinder of the oil well pump in the oil well;
the inner suspension body, the sucker rod and the oil pump plunger which are connected with the inner suspension body are lifted up through the conveying rod, and the inner suspension body is detached;
and connecting the remaining oil pumping rods to be hung and the upper ends of the oil pumping pump plungers with the oil pumping rods with proper lengths, and lowering the oil pumping pump plungers into the oil well pump cylinder.
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| CN202010768147.0A CN111980611B (en) | 2020-08-03 | 2020-08-03 | Underground suspension device for sucker rod and pump depth adjusting method for oil well pump |
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| CN202010768147.0A CN111980611B (en) | 2020-08-03 | 2020-08-03 | Underground suspension device for sucker rod and pump depth adjusting method for oil well pump |
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| CN111980611A true CN111980611A (en) | 2020-11-24 |
| CN111980611B CN111980611B (en) | 2022-12-02 |
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| CN2160013Y (en) * | 1993-08-30 | 1994-03-30 | 石油勘探开发科学研究院机械所 | Suspending device for under well |
| US20020189805A1 (en) * | 2001-06-13 | 2002-12-19 | Weatherford/Lamb, Inc. | Double-acting reciprocating downhole pump |
| US20060272828A1 (en) * | 2003-11-07 | 2006-12-07 | Manson David J C | Retrievable downhole tool and running tool |
| CN101096904A (en) * | 2006-06-26 | 2008-01-02 | 白霞 | Downhole tool connecting separator |
| CN201786314U (en) * | 2010-09-15 | 2011-04-06 | 中国石油天然气集团公司 | Embedded blowout preventer of sucker rod |
| CN106089125A (en) * | 2016-04-27 | 2016-11-09 | 中国石油化工股份有限公司 | Sucker rod suspension device |
| CN205908278U (en) * | 2016-07-26 | 2017-01-25 | 赵春海 | Rod hanger |
| CN111075406A (en) * | 2019-12-12 | 2020-04-28 | 中国石油化工股份有限公司 | Fixed pulley suspension type parallel double-pump downhole oil production pipe column |
| CN211008502U (en) * | 2019-06-03 | 2020-07-14 | 中国石油天然气股份有限公司 | Sucker rod hanger, injection-production integrated lifting pipe column and oil production device |
-
2020
- 2020-08-03 CN CN202010768147.0A patent/CN111980611B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2160013Y (en) * | 1993-08-30 | 1994-03-30 | 石油勘探开发科学研究院机械所 | Suspending device for under well |
| US20020189805A1 (en) * | 2001-06-13 | 2002-12-19 | Weatherford/Lamb, Inc. | Double-acting reciprocating downhole pump |
| US20060272828A1 (en) * | 2003-11-07 | 2006-12-07 | Manson David J C | Retrievable downhole tool and running tool |
| CN101096904A (en) * | 2006-06-26 | 2008-01-02 | 白霞 | Downhole tool connecting separator |
| CN201786314U (en) * | 2010-09-15 | 2011-04-06 | 中国石油天然气集团公司 | Embedded blowout preventer of sucker rod |
| CN106089125A (en) * | 2016-04-27 | 2016-11-09 | 中国石油化工股份有限公司 | Sucker rod suspension device |
| CN205908278U (en) * | 2016-07-26 | 2017-01-25 | 赵春海 | Rod hanger |
| CN211008502U (en) * | 2019-06-03 | 2020-07-14 | 中国石油天然气股份有限公司 | Sucker rod hanger, injection-production integrated lifting pipe column and oil production device |
| CN111075406A (en) * | 2019-12-12 | 2020-04-28 | 中国石油化工股份有限公司 | Fixed pulley suspension type parallel double-pump downhole oil production pipe column |
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| Publication number | Publication date |
|---|---|
| CN111980611B (en) | 2022-12-02 |
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