CN209339905U - A kind of naked eye bridge blinding tool of petroleum drilling and mining - Google Patents

Abstract

The utility model relates to petroleum drilling and mining field, the naked eye bridge blinding tool of especially a kind of petroleum drilling and mining is arranged between casing, comprising: central tube, the central tube is connected with casing, for transmitting material；Expansion glue cylinder and cylinder sleeve are arranged with outside central tube, the cylinder sleeve is connected with expansion packing element through the first connector sleeve, first connector sleeve only makes the first cavity that external material enters between rod set and central tube, the piston being movably set in outside central tube is equipped in first cavity, it is equipped with the pressure transmission hole being connected with the first cavity on central tube, the bar being located inside central tube is equipped on the pressure transmission hole.The structure design of the utility model is reasonable, both it had been able to satisfy normal cementing operation, it is able to satisfy the filling of cement slurry again, it is easy for operation, cementing quality is improved, envelope can be played the role of and altered, the problem of oil-gas-water layer is mutually altered in recovery process drilling well is avoided, cost of oil production is reduced, production efficiency is improved.

Description

A kind of naked eye bridge blinding tool of petroleum drilling and mining

Technical field

The utility model relates to petroleum drilling and mining field, the naked eye bridge blinding tool of especially a kind of petroleum drilling and mining.

Background technique

Currently, the domestic inflatable packer for bridge blinding generallys use hydraulic expansion type structure, i.e., using water, mud or Person's cement slurry filling packer reaches sealing effect, and sealed pressure is high, and it is big to adapt to hole diameter range.The small part casing in construction External packer is filled with cement slurry, but due to complicated construction technique and special and be difficult to promote and apply, and if with Grout filling inflatable packer cannot meet cementing well and grout filling due to the limitation of construction technology simultaneously The implementation of the dual process of inflatable packer can only carry out a kind of construction technology, there is significant limitation, therefore general use Fill the form of water or mud；But by the way of filling water or mud, because of most expansions for bridge blinding What formula packer was filled is the water or mud of fluid state, once packer set valve system is because of rubber parts aging seal failure Afterwards, the water or mud filled inside packer is lost from, and packer loses sealing function because losing filling liquid.

Utility model content

The utility model provides a kind of naked eye bridge blinding tool of petroleum drilling and mining, it is reasonable in design, has both been able to satisfy just Normal cementing operation, and it is able to satisfy the filling of cement slurry, it is easy for operation, cementing quality is improved, envelope can be played and altered Effect, avoids the problem of oil-gas-water layer is mutually altered in recovery process drilling well, reduces cost of oil production, improves exploitation effect Rate solves problems of the prior art.

Used technical solution is the utility model to solve above-mentioned technical problem: a kind of naked eye bridge blinding of petroleum drilling and mining Tool is arranged between casing, comprising:

Central tube, the central tube is connected with casing, for transmitting material；

Expansion glue cylinder and cylinder sleeve are arranged with outside central tube, the cylinder sleeve is connected with expansion packing element through the first connector sleeve, institute Stating the first connector sleeve only makes external material enter the first cavity between rod set and central tube, is equipped with and lives in first cavity The dynamic piston being set in outside central tube, is equipped with the pressure transmission hole being connected with the first cavity, on the pressure transmission hole on central tube Equipped with the bar being located inside central tube；

Position is equipped with the first passage being connected with the first cavity between the first connector sleeve and central tube, and described first is logical Road only makes material in the first cavity enter position between expansion packing element and central tube.

Preferably, the connecting cavity of connection the first cavity and exterior space is equipped in the first connector sleeve, in the connecting cavity It is interior to be equipped with the first ball-and-seat for only making external material enter the first cavity.

Preferably, in the first passage be equipped with only make material from the first cavity enter expansion packing element and central tube between Second ball-and-seat of position.

Preferably, the bar and the perpendicular setting of center inside pipe wall.

Preferably, the bar is connected with pressure transmission hole screw thread.

Preferably, first connector sleeve is connected with expansion packing element, cylinder sleeve screw thread respectively.

Preferably, the second connector sleeve, second connector sleeve and center tube end are connected in the cylinder sleeve end thread Screw thread is connected, and the second connector sleeve is connected through top connection with casing.

Preferably, the expansion packing element is connected with third connection external threading, the third connector sleeve and center tube end spiral shell Line is connected, and the third connector sleeve is connected through lower contact with casing.

Preferably, it is equipped with the first sealing ring in expansion packing element both ends link position, connected in the cylinder sleeve and the second connector sleeve Position is connect equipped with the second sealing ring.

Preferably, first connector sleeve and cylinder sleeve, expansion packing element are all made of taper thread and connects, second connector sleeve with Central tube, cylinder sleeve, top connection are all made of taper thread connection, and the third connector sleeve and central tube, expansion packing element, lower contact are adopted It is connected with taper thread.

The beneficial effect of the utility model using the above structure is, reasonable in design, and it is solid to be both able to satisfy normal cement Well operation, and it is able to satisfy the filling of cement slurry, it is easy for operation, cementing quality is improved, envelope can be played the role of and altered, avoided The problem of oil-gas-water layer is mutually altered in recovery process drilling well, reduces cost of oil production, improves production efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

In figure, 1, central tube；2, packing element is expanded；3, cylinder sleeve；4, the first connector sleeve；5, the first cavity；6, pressure transmission hole；7, it keeps off Bar；8, first passage；9, connecting cavity；10, the first ball-and-seat；11, the second ball-and-seat；12, the second connector sleeve；13, top connection； 14, third connector sleeve；15, lower contact；16, the first sealing ring；17, the second sealing ring；18, piston.

Specific embodiment

In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this reality It is described in detail with novel.

As shown in Figure 1, a kind of naked eye bridge blinding tool of petroleum drilling and mining, is arranged between casing, comprising:

Central tube 1, the central tube 1 is connected with casing, for transmitting material；

Expansion glue cylinder 2 and cylinder sleeve 3 are arranged with outside central tube 1, the cylinder sleeve 3 and expansion packing element 2 are through 4 phase of the first connector sleeve Even, first connector sleeve 4 only makes the first cavity 5 that external material enters between rod set 3 and central tube 1, empty described first It is equipped with the piston 18 being movably set in outside central tube 1 in chamber 5, the pressure transmission hole being connected with the first cavity 5 is equipped on central tube 1 6, the bar 7 being located inside central tube 1 is equipped on the pressure transmission hole 6；

Position is equipped with the first passage 8 being connected with the first cavity 5 between the first connector sleeve 4 and central tube 1, described First passage 8 only makes material in the first cavity 5 enter position between expansion packing element 2 and central tube 1.

It is equipped with the connecting cavity 9 of connection the first cavity 5 and exterior space in the first connector sleeve 4, is set in the connecting cavity 9 There is the first ball-and-seat 10 for only making external material enter the first cavity 5.

The meta position for only making material enter expansion packing element 2 and central tube 1 from the first cavity 5 is equipped in the first passage 8 The second ball-and-seat 11 set.

In order to guarantee that the rubber plug put into casing can smoothly sever bar 7, the bar 7 mutually hangs down with 1 inner wall of central tube Straight setting.Bar 7 is set perpendicular to 1 inner wall of central tube, bar is easiest to stress disconnection when guaranteeing that rubber plug is hit, and examines Consider mismachining tolerance, allows bar 7 generally perpendicular with 1 inner wall of central tube, after bar 7 severs, material can be through pressure transmission hole 6 Into the first cavity 5.

It is cooperatively connected in order to facilitate bar 7 and pressure transmission hole 6, the bar 7 is connected with 6 screw thread of pressure transmission hole.

The first connector sleeve 4 is installed and used for convenience, first connector sleeve 4 respectively with expansion packing element 2,3 spiral shell of cylinder sleeve Line is connected.

In order to facilitate the installation of cylinder sleeve 3, guarantee the airtightness of the first cavity 5, is connected with the in 3 end thread of cylinder sleeve Two connector sleeves 12, second connector sleeve 12 are connected with 1 end thread of central tube, and the second connector sleeve 12 is through top connection 13 and casing It is connected.

In order to facilitate installing and using for expansion packing element 2, the expansion packing element 2 is connected with 14 screw thread of third connector sleeve, described Third connector sleeve 14 is connected with 1 end thread of central tube, and the third connector sleeve 14 is connected through lower contact 15 with casing.

In order to guarantee the first cavity 5 and expand the airtightness inside packing element 2, to guarantee the expansion effect of expansion packing element 2, It expands 2 both ends link position of packing element and is equipped with the first sealing ring 16, be equipped with the in the cylinder sleeve 3 and 12 link position of the second connector sleeve Two sealing rings 17.

In order to improve the bonding strength between each threaded connection element, first connector sleeve 4 and cylinder sleeve 3, expansion packing element 2 It is all made of taper thread connection, second connector sleeve 12 is all made of taper thread and connects with central tube 1, cylinder sleeve 3, top connection 13, institute Third connector sleeve 14 is stated to be all made of taper thread with central tube 1, expansion packing element 2, lower contact 15 and connect.

In use, the present apparatus carries out cement operations after following casing to be lowered into underground predeterminated position, when the rubber plug of well cementation When reaching 7 position of lever with material from casing, lever 7 is severed, and rubber plug is continued traveling downwardly to final bruising state, at this time from casing The cement slurry of bottom sleeve pipe and annular space band is full of annular space band, and part of cement slurry passes through the from connecting cavity 9 under pressure state One ball-and-seat 10 enters inside the first cavity 5；Water or mud are filled into casing after rubber plug bruising, when in casing water or Mud enters in the first cavity 5 after reaching certain pressure from pressure transmission hole 6, and water or mud into the first cavity 5 will push first Piston 18 inside cavity 5 is moved along the first cavity 5, and piston 18 squeezes the cement entered inside the first cavity 5 from connecting cavity 9 Slurry, the cement because being provided with the first ball-and-seat in connecting cavity 9, when piston 18 moves down extruding, into the first cavity 5 Slurry can enter expansion packing element 2 and 1 middle position of central tube from first passage 8 by the second ball-and-seat 11, and expansion packing element 2 is supportted It opens, the mode cement slurry repeatedly suppressed can be used and strutted packing element 2 is expanded, be expressed to it on inner wall of external drilling, mention Height has been cemented the well quality, and oil-gas-water layer intersection is separated, and oil gas water occurs after avoiding the fracture of oil-gas-water layer intersection cement slurry The problem of layer is mutually altered, reduces cost of oil production, improves production efficiency.

Above-mentioned specific embodiment cannot function as the limitation to scope of protection of the utility model, for the skill of the art For art personnel, any alternate modification or transformation made to the utility model embodiment all fall within the guarantor of the utility model It protects in range.

Place is not described in detail for the utility model, is the well-known technique of those skilled in the art of the present technique.

Claims (10)

1. a kind of naked eye bridge blinding tool of petroleum drilling and mining is arranged between casing characterized by comprising

Central tube, the central tube is connected with casing, for transmitting material；

It is arranged with expansion glue cylinder and cylinder sleeve outside central tube, the cylinder sleeve is connected with expansion packing element through the first connector sleeve, and described the One connector sleeve only makes the first cavity that external material enters between rod set and central tube, and movable sleeve is equipped in first cavity The piston being located at outside central tube is equipped with the pressure transmission hole being connected with the first cavity on central tube, is equipped on the pressure transmission hole Bar inside central tube；

Position is equipped with the first passage being connected with the first cavity between the first connector sleeve and central tube, and the first passage is only Material in the first cavity is set to enter position between expansion packing element and central tube.

2. a kind of naked eye bridge blinding tool of petroleum drilling and mining according to claim 1, which is characterized in that in the first connector sleeve Connecting cavity equipped with connection the first cavity and exterior space, being equipped in the connecting cavity only makes external material enter the first cavity The first ball-and-seat.

3. a kind of naked eye bridge blinding tool of petroleum drilling and mining according to claim 2, which is characterized in that in the first passage It is interior to be equipped with the second ball-and-seat for only making material enter position between expansion packing element and central tube from the first cavity.

4. a kind of naked eye bridge blinding tool of petroleum drilling and mining according to any one of claims 1 to 3, which is characterized in that described Bar and the perpendicular setting of center inside pipe wall.

5. a kind of naked eye bridge blinding tool of petroleum drilling and mining according to claim 4, which is characterized in that the bar and pressure transmission Hole screw thread is connected.

6. a kind of naked eye bridge blinding tool of petroleum drilling and mining according to claim 5, which is characterized in that first connector sleeve It is connected respectively with expansion packing element, cylinder sleeve screw thread.

7. a kind of naked eye bridge blinding tool of petroleum drilling and mining according to claim 5 or 6, which is characterized in that in the cylinder sleeve End thread is connected with the second connector sleeve, and second connector sleeve is connected with central tube end thread, and the second connector sleeve is above connect Head is connected with casing.

8. a kind of naked eye bridge blinding tool of petroleum drilling and mining according to claim 7, which is characterized in that the expansion packing element and Third connects external threading and is connected, and the third connector sleeve is connected with central tube end thread, and the third connector sleeve is through lower contact It is connected with casing.

9. a kind of naked eye bridge blinding tool of petroleum drilling and mining according to claim 8, which is characterized in that at expansion packing element both ends Link position is equipped with the first sealing ring, is equipped with the second sealing ring in the cylinder sleeve and the second connector sleeve link position.

10. a kind of naked eye bridge blinding tool of petroleum drilling and mining according to claim 8 or claim 9, which is characterized in that described first connects Female connector is all made of taper thread and connects with cylinder sleeve, expansion packing element, and second connector sleeve and central tube, cylinder sleeve, top connection are all made of Taper thread connection, the third connector sleeve and central tube, expansion packing element, lower contact are all made of taper thread and connect.