CN209195280U - Steel connector titanium alloy drilling rod and drill string - Google Patents
Steel connector titanium alloy drilling rod and drill string Download PDFInfo
- Publication number
- CN209195280U CN209195280U CN201821714371.6U CN201821714371U CN209195280U CN 209195280 U CN209195280 U CN 209195280U CN 201821714371 U CN201821714371 U CN 201821714371U CN 209195280 U CN209195280 U CN 209195280U
- Authority
- CN
- China
- Prior art keywords
- titanium alloy
- steel
- connector
- screw thread
- drilling rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of steel connector titanium alloy drilling rod and drill string, the steel connector titanium alloy drilling rod includes: titanium drill pipe body and the steel joint for being threadedly attached in titanium alloy drill pipe body end.The titanium alloy tube body of the utility model is not less than with grade of steel steel drill rod with tensile strength, torsional strength, the sealing performance of the threaded connection performance that are threadedly coupled between performance and steel joint etc. between steel joint, with the quality lighter than conventional steel drilling rod, higher specific strength, the preferably performances such as corrosion-resistant endurance, significantly mitigate whole drill string weight, the advantages that alleviating stress to concentrate, improving the maximum depth of setting of drill string and extend drill string service life.It mainly solves the problem of that conventional steel drilling rod specific strength is low and the failure such as stress corrosion fracture, fatigue fracture, leakage, overload easily occurs under the conditions of complex working condition oil gas drilling.
Description
Technical field
The utility model relates to drilling rods used in oil-gas exploration and development process, and in particular to a kind of titanium alloy drilling rod, especially
It is a kind of steel connector titanium alloy drilling rod and drill string.
Background technique
With the development of petroleum industry, deep-well, ultradeep well and horizontal well quantity are continuously increased, and exploration and development difficulty increases.
Conventional steel drilling rod specific strength is low, and the stress corrosion fracture that occurs under the conditions of complex working condition oil gas drilling, is let out at fatigue fracture
The failure accidents such as leakage, overload cause great threat to the safety in production of oil/gas well.Titanium alloy drilling rod specific strength height, sulfuration resistant
Hydrogen stress corrosion performance and resistance to corrosion fatigue are functional, can significantly mitigate drill string weight, alleviate stress and concentrate, improve drill string
Maximum depth of setting, resistance to corrosion fatigue performance etc., extend drill string service life, reduce in oil/gas well and pacify caused by drilling tool failure
Full accident.
Utility model content
The utility model provides a kind of steel connector titanium alloy drilling rod and drill string, to solve existing steel drill rod specific strength
It is low, the safety accidents such as stress corrosion fracture, fatigue fracture, leakage, overload easily occur under the conditions of complex working condition oil gas drilling
Problem.
To achieve the above object, the utility model uses following technological means:
A kind of steel connector titanium alloy drilling rod, comprising: titanium alloy drill pipe body is bored with the titanium alloy is threadedly attached in
The steel drill rod connector in rod tube body end portion, the titanium alloy drill pipe body are matched with the steel drill rod connector by hot assembly interference
Close connection；
The steel drill rod connector includes: to be threadedly attached in outside the steel at titanium alloy drill pipe body both ends respectively
Nipple and steel internal screw connector；
Steel male connection end can be threadedly coupled with steel internal screw fitting end.
The titanium alloy drill pipe body include: positioned at titanium alloy drill pipe body both ends two thick sections, two plus
Thick changeover portion and the interlude among the titanium alloy drill pipe body, the interlude are connected to the transition at both ends
Between section；The outer diameter of the thick section is greater than the outer diameter of the interlude.
It is respectively equipped on described two thick sections outside the first external screw thread and second for the endface for extending to the thick section
Screw thread, the titanium alloy drill pipe body are connect with the steel external screw thread respectively by first external screw thread at both ends and the second external screw thread
Head is connected with the steel internal screw joint screw thread.
The steel male connection is equipped with and the described first outer spiral shell on the connecting pin of the titanium alloy drill pipe body
The first internal screw thread that line is cooperatively connected；
The steel internal screw connector is equipped with and the described second outer spiral shell on the connecting pin of the titanium alloy drill pipe body
The second internal screw thread that line is cooperatively connected.
The other end of the steel male connection is equipped with and the matched connector external screw thread of the steel internal screw connector；
The other end of the steel internal screw connector is equipped with and the matched connector internal screw thread of the steel male connection.
The connector external screw thread and connector internal screw thread are API drilling tool thread.
First external screw thread, the second external screw thread, the first internal screw thread and the second internal screw thread are trapezoidal thread.
One end of the steel male connection is equipped with and the thrust shoulder of the titanium alloy tube body matching ends and right
Middle conical surface shoulder.
The titanium alloy tube body end face in the thrust shoulder and titanium alloy tube body end portion, which is interference fitted, to be connected, the centering conical surface
Shoulder and titanium alloy tube body end portion's adopting conical surface interference in titanium alloy tube body end portion are cooperatively connected.
A kind of drill string, including multiple steel connector titanium alloy drilling rods, multiple steel connector titanium alloy drilling rods
It joins end to end, is connected between two adjacent steel connector titanium alloy drilling rods by male connection and the mutual screw thread of female adapter
It connects.
Compared with conventional steel drilling rod, the utility model is had the advantage that
The steel connector titanium alloy drilling rod specific strength height, anti-H 2 S stress corrosion performance and resistance to corrosion fatigue of the utility model
It is functional, it can significantly mitigate drill string weight, alleviate stress and concentrate, improve maximum depth of setting, the resistance to corrosion fatigue of drill string
Performance etc. extends drill string service life, reduces safety accident caused by drilling tool failure in oil/gas well.Using steel joint external screw thread
Standard API drilling tool thread is used with connector internal screw thread, can be connect in any well section with any common steel drill rod thread, without turning
Changing-over head removes drilling rod elevator apparatus without changing, and versatility is high, and anti-Thread-sticking performance is good, improve drilling rod repeatedly on unload
Number is detained, the drilling life of drill pipe of titanium alloy is extended and expands the application range of titanium alloy drilling rod.The utility model steel
Using buttress thread connection design between connector and titanium alloy tube body, and using the cooling steel simultaneously of hot assembly, that is, titanium alloy tube body
It is assembled under connector heated condition, guarantees that restoring room temperature rear thread in assembly reaches interference fit, ensure that the spiral shell of tube body and connector
The intensity of line coupling part is not less than tube body intensity.In addition, thrust (torque) shoulder and the centering of the design of the utility model connector
Stablize (torque) conical surface shoulder, improve the torsional strength and sealing performance of titanium alloy drilling rod, has more higher than steel drill rod
Corrosion resistance, lighter homogeneous tube weight and higher lower deep ability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the steel connector titanium alloy drilling rod of the utility model embodiment.
Fig. 2 is the enlarged structure in Fig. 1 at A.
Fig. 3 is the enlarged structure in Fig. 1 at B.
Drawing reference numeral explanation:
1, connector external screw thread, 2, steel male connection, the 31, first internal screw thread, the 32, first external screw thread, 4, first thickeies
Section, 5, First Transition section, 6, titanium alloy tube body, 7, interlude
, the 8, second changeover portion, the 9, second thick section, the 101, second internal screw thread, the 102, second external screw thread, 11, spiral shell in steel
Line connector, 12, connector internal screw thread, A1, thrust shoulder, A2, titanium alloy tube body end face, B1, centering conical surface shoulder, B2, titanium alloy
The tube body end conical surface, 100, steel connector titanium alloy drilling rod.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention
Specific embodiment of the present utility model.
As shown in Figure 1, the steel connector titanium alloy drilling rod 100 according to the utility model embodiment includes: titanium alloy drill pipe
Body 6 and steel male connection 2, the steel internal screw connector 11 for being threadedly attached in titanium alloy drill pipe body end.
Unlike existing steel drill rod: the drill pipe body 6 of the utility model is made of titanium alloy, moreover, titanium alloy drill pipe
Body and steel joint are to heat hot assembly under steel joint by cooling titanium alloy tube body to complete, titanium alloy tube body and steel
It is connected through a screw thread, rather than is welded to connect between connector.The steel connector titanium alloy drilling rod of the utility model is than conventional steel drilling rod
With higher specific strength, corrosion resistance, endurance and high-temperature behavior, the lower deep ability, safety of drill string are greatly improved
Property and service life.
Further, as shown in Figure 1, titanium alloy tool joint includes: to be threadedly attached in the titanium alloy respectively to bore
The steel male connection 2 at rod tube body both ends and steel internal screw connector 11, i.e. steel connector titanium alloy drilling rod 100 include: that titanium closes
Golden drill pipe body 6 and steel male connection 2 and the steel for being threadedly attached in 6 both ends of titanium alloy drill pipe body respectively
Female adapter 11.In Fig. 1, steel male connection 2 is threadedly attached in the bottom end of titanium alloy drill pipe body 6, in steel
Nipple 11 is threadedly attached in the top of titanium alloy drill pipe body 6.By the way that 6 both ends of titanium alloy drill pipe body are connected respectively
Steel male connection 2 and steel internal screw connector 11 are connect, using the titanium alloy drilling rod of steel joint, in any well section and can be appointed
Common steel drill rod thread of anticipating connects, and is not necessarily to crossover sub, removes drilling rod elevator apparatus without changing, versatility is high, anti-screw thread
Thread gluing performance is good, improves drilling rod upper shackle number repeatedly, extends the drilling life of drill pipe of titanium alloy and expand titanium alloy
The application range of drilling rod.
Further, as shown in Figure 1, the titanium alloy drill pipe body 6 includes: positioned at 6 liang of the titanium alloy drill pipe body
First thick section 4, second thick section 9 at end, the First Transition section 5, second positioned at the first thick section 4,9 both ends of the second thick section
Changeover portion 8, and the interlude 7 among the titanium alloy drill pipe body 6, the interlude 7 are connected to the described of both ends
Between First Transition section 5, the second changeover portion 8；First thick section 4, the second thick section 9 outer diameter be greater than the interlude 7
Outer diameter, i.e., described first thick section 4, the second thick section 9 wall thickness be greater than the wall thickness of the interlude 10, described the of both ends
Be respectively equipped on one thick section 4, the second thick section 9 extend to first thick section 4, the second thick section 9 endface
One external screw thread 32, the second external screw thread 102, the titanium alloy drill pipe body 6 pass through the first external screw thread 32, second external screw thread at both ends
102 are threadedly coupled with the steel male connection 2 and the steel internal screw connector 11 respectively.First thick section 4, second adds
Thick section 9 increases the company of the titanium alloy drill pipe body 6 and the steel male connection 2 and the steel internal screw connector 11
The bonding strength for meeting place, much larger than the tensile strength for not thickening tube body position (i.e. interlude 7), sealing performance is greater than 35MPa not
It leaks, the mud pressure (usually less than 20MPa) being far longer than in drilling rod use process, completely adaptation working environment.
Further, as shown in Figure 1, the steel male connection 2 is in the connecting pin with the titanium alloy drill pipe body 6
Equipped with the first internal screw thread 31 being cooperatively connected with the titanium alloy drill pipe body 6, the first internal screw thread 31 is matched with the first external screw thread 32
Connection is closed, the other end (being bottom end in Fig. 1) of the steel male connection 2 is equipped with and spiral shell in the steel connector titanium alloy drilling rod
The connector external screw thread 1 of the matching connection of line connector 11.
Further, as shown in Figure 1, the steel connector titanium alloy drill pipe box 11 with the titanium alloy drilling rod
The connecting pin of tube body 6 is equipped with the second internal screw thread 101 for being cooperatively connected with the titanium alloy drill pipe body 6, the second internal screw thread 101 and
Second external screw thread 102 is cooperatively connected, and the other end (being top in Fig. 1) of the steel connector titanium alloy drill pipe box 11 is set
There is the connector internal screw thread 12 that connection is matched with the titanium alloy male connection 2.
Further, as shown in Fig. 2, one end of the titanium alloy drill pipe body 6 is equipped with and the steel male connection 2
The first thrust (torque) the shoulder A1, the first thrust (torque) shoulder A1 to match is the shoulder of titanium alloy drill pipe body 6, is located at
The root (thrust shoulder A1 is located at the upper end of the first external screw thread 32 in Fig. 2) of first external screw thread 32, for example, the first thrust (torque)
Shoulder A1 is the cascaded surface positioned at the upper end of the first external screw thread 32, the axis of vertical titanium alloy drill pipe body 6.First thrust (is turned round
Square) shoulder A1 is used for and steel male connection 2 cooperates, increase the anti-of titanium alloy drill pipe body 1 and steel male connection 2
Torsion ability and sealability.
Further, as shown in figure 3, one end of the titanium alloy drill pipe body 6 is equipped with and the steel internal screw connector 2
The centering conical surface (torque) the shoulder B1 to match, the centering conical surface (torque) shoulder B1 are the shoulder of titanium alloy drill pipe body 6, are located at
The conical surface (centering conical surface shoulder B1 is located at the lower end of the first external screw thread 32 in Fig. 3) at titanium alloy tube body end portion screw initial thread, example
Such as, the centering conical surface (torque) shoulder B1 is the conical surface positioned at the lower end of the first external screw thread 32.The centering conical surface (torque) shoulder B1 is used
Cooperate in steel male connection 2, increases anti-twisting property, the sealing of titanium alloy drill pipe body 6 and steel male connection 2
Ability and anti-shackle ability, furthermore ensure that the centring property and Assembly stability of screw thread during hot assembly, greatly mention
The high hot assembly qualification rate of steel connector titanium alloy drilling rod, can be improved efficiency with save the cost.
Further, the connector external screw thread 1 and connector internal screw thread 12 are the drilling tool thread of standard, the as API of standard
Drilling tool thread can connect with any common steel drill rod thread in any well section, be not necessarily to crossover sub, remove drilling rod without changing
Elevator apparatus, versatility is high, and anti-Thread-sticking performance is good, improves drilling rod upper shackle number repeatedly, extends the brill of titanium alloy
Bar service life and the application range for expanding titanium alloy drilling rod.
Steel connector titanium alloy tool joint external screw thread 1 and connector internal screw thread 12 are API standard drilling tool thread.First external screw thread
32, the second external screw thread 102, the first internal screw thread 31 and the second internal screw thread 101 are buttress thread.
Further, first external screw thread 32, the second external screw thread 102, in first internal screw thread 31 and described second
Screw thread 101 is buttress thread.Using buttress thread, increase the tensile strength of threaded connection.
The utility model connects titanium alloy tube body with steel joint, can be realized the connection, sealing and antitorque function of connector.
Using buttress thread, increase the tensile strength of threaded connection, stablizing shoulder design using thrust shoulder and centering can be in hot charging
Be effectively protected in the process screw thread torque wrench moment and guarantee screw thread to neutrality, hot assembly stability is improved, in addition, thrust platform
Shoulder and the stable shoulder of centering design the sealing that can effectively improve connector and torsional property and improve and put shackle performance.It is several by this
The technological improvement not having in kind conventional drill is, it can be achieved that steel connector titanium alloy drilling rod has good connection, sealing and resistance to torsion
Energy.
The steel connector titanium alloy drilling rod manufacturing process of the utility model is as follows:
Titanium alloy drill pipe body 6 (abbreviation tube body) is made by titanium sponge vacuum melting, rolling, extruding (or upset) mode
Titanium alloy tube body 6 has interlude 7 and makes the first thick section 4, the second thick section of 6 end of titanium alloy tube body formation certain length
9 and First Transition section 5, the second changeover portion 8, there is the partially terraced of high bonding strength in the first thick section 4, the processing of the second thick section 9
The special external screw thread of shape.
Steel drill rod connector (including steel male connection 2 and steel internal screw connector 11) is fast using precision die forging mode
Rapid-result type, connector one end be processed into match with the first external screw thread 32 of titanium alloy tube body 6, the second external screw thread 102 it is partially trapezoidal
Special first internal screw thread 31, the second internal screw thread 101, the other end are processed into external screw thread 1 or interior spiral shell with API standard drilling tool thread
Line 12.
Steel male connection 2 and steel internal screw connector 11 are connected into using the method for hot assembly with titanium alloy tube body 6
For an entirety, i.e. injection cooling medium is protected titanium alloy tube body 6, steel male connection 2 and steel internal screw connector 11, is protected
Upper button is carried out by torque system after temperature to connect, and forms steel connector titanium alloy drilling rod overall structure after cooling.
In order to improve the anti-twisting property and sealability of tube body and connector, titanium alloy drill pipe body 6 and steel joint connection
Locate screw thread using thrust shoulder and stablizes the stable shoulder structure design of centering, after hot assembly connection cooling, end thrust
Shoulder and centering stablize shoulder and are in interference fit state, and foring connection structure is disposable connection, in use
It can not dismantle, structure design is for guaranteeing that being threadedly coupled intensity and prevention shackle plays important function.
The utility model additionally provides a kind of drill string, and steel connector titanium alloy drilling rod 100 is connect by titanium alloy in use
The API drilling tool thread at head both ends connects to form drill string.
In use, the male connection 2 and female adapter 11 between adjacent steel connector titanium alloy drilling rod 100
It is mutually threadedly coupled, forms drill string, this drill string is connected with other drilling tools, from shaft bottom drill bit until derrick drilling rod, is formed
Entire drill string.Wherein, the length of drill string accounts for 90% or more of entire drill string length.
Pass through above-mentioned production, forms steel connector titanium alloy drilling rod 100, comprising: titanium alloy drill pipe body 6 and pass through spiral shell respectively
Line is connected to steel male connection 2 and the steel internal screw connector 11 at titanium alloy drill pipe body both ends.Titanium alloy drilling rod
Tube body 6 includes: to thicken changeover portion (5,8) positioned at the thick section (4,9) at 6 both ends of titanium alloy drill pipe body and be located at institute
State the interlude 7 among titanium alloy drill pipe body 6；One end of steel internal and external threads connector be equipped with outside the titanium alloy tube body 6
The thrust shoulder A1 that nipple matches, the other end are equipped with the centering matched with 6 male connection of titanium alloy tube body
Conical surface B1 shoulder.Steel connector titanium alloy tool joint external screw thread 1 and connector internal screw thread 12 are API standard drilling tool thread.Outside first
Screw thread 32, the second external screw thread 102, the first internal screw thread 31 and the second internal screw thread 101 are buttress thread.
Analysis the result shows that, the above-mentioned steel connector titanium alloy drilling rod of the utility model, the threaded connection of tube body and connector is strong
Degree is greater than the tensile strength for not thickening tube body position, and sealing performance is greater than 35MPa and does not leak, is far longer than drilling rod and used
Mud pressure (usually less than 20MPa) in journey.Torsional strength in kind, tensile strength and the leakproofness of steel connector titanium alloy drilling rod
The rapid drilling performance requirement of deep-well, ultradeep well and horizontal well can be all satisfied.
It should be noted last that the above specific embodiment is only to illustrate the technical solution of the utility model rather than limits
System, although the utility model is described in detail referring to example, those skilled in the art should understand that, it can be right
The technical solution of the utility model is modified or replaced equivalently, without departing from the spirit and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (10)
1. a kind of steel connector titanium alloy drilling rod characterized by comprising titanium alloy drill pipe body (6) and be threadedly attached in
The steel drill rod connector of titanium alloy drill pipe body (6) end, the titanium alloy drill pipe body (6) connect with the steel drill rod
Head is interference fitted by hot assembly and is connected；
The steel drill rod connector includes: to be threadedly attached in outside the steel at titanium alloy drill pipe body (6) both ends respectively
Nipple (2) and steel internal screw connector (11)；
Steel male connection (2) end can be connect with steel internal screw connector (11) end thread.
2. steel connector titanium alloy drilling rod as described in claim 1, which is characterized in that the titanium alloy drill pipe body (6) includes:
Positioned at two thick sections (4,9) at titanium alloy drill pipe body (6) both ends, two thickening changeover portions (5,8) and it is located at institute
State the intermediate interlude (7) of titanium alloy drill pipe body (6), the interlude (7) be connected to both ends the changeover portion (5,8) it
Between；The outer diameter of the thick section (4,9) is greater than the outer diameter of the interlude (7).
3. steel connector titanium alloy drilling rod as claimed in claim 2, which is characterized in that on described two thick sections (4,9) respectively
The first external screw thread (32) and the second external screw thread (102) equipped with the endface for extending to the thick section (4,9), the titanium alloy
Drill pipe body (6) by first external screw thread (32) at both ends and the second external screw thread (102) respectively with the steel male connection
(2) it is threadedly coupled with the steel internal screw connector (11).
4. steel connector titanium alloy drilling rod as claimed in claim 3, which is characterized in that the steel male connection (2) with
The connecting pin of the titanium alloy drill pipe body (6) is equipped with the first internal screw thread being cooperatively connected with first external screw thread (32)
(31)；
The steel internal screw connector (11) on the connecting pin of the titanium alloy drill pipe body (6) be equipped with described second outside
The second internal screw thread (101) that screw thread (102) is cooperatively connected.
5. steel connector titanium alloy drilling rod as claimed in claim 4, which is characterized in that the steel male connection (2) it is another
One end is equipped with and the matched connector external screw thread (1) of the steel internal screw connector (11)；
The other end of the steel internal screw connector (11) is equipped with and spiral shell in the matched connector of the steel male connection (2)
Line (12).
6. steel connector titanium alloy drilling rod as claimed in claim 5, which is characterized in that in the connector external screw thread (1) and connector
Screw thread (12) is API drilling tool thread.
7. steel connector titanium alloy drilling rod as claimed in claim 6, which is characterized in that first external screw thread (32), outside second
Screw thread (102), the first internal screw thread (31) and the second internal screw thread (101) are trapezoidal thread.
8. steel connector titanium alloy drilling rod as described in claim 1, which is characterized in that the one of the steel male connection (2)
End is equipped with thrust shoulder (A1) and the centering conical surface (B1) shoulder with titanium alloy drill pipe body (6) matching ends.
9. steel connector titanium alloy drilling rod as claimed in claim 8, which is characterized in that the thrust shoulder (A1) and titanium alloy bore
The titanium alloy tube body end face (A2) of rod tube body (6) end is interference fitted connection, and the centering conical surface (B1) shoulder and titanium alloy bore
The titanium alloy tube body end portion conical surface (B2) of rod tube body (6) end is interference fitted connection.
10. a kind of drill string, which is characterized in that bored including steel connector titanium alloy described in multiple claim 1 to 9 any one
Bar (100), multiple steel connector titanium alloy drilling rods (100) join end to end, two adjacent steel connector titanium alloy drilling rods
(100) it is mutually threadedly coupled between by male connection (2) and female adapter (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821714371.6U CN209195280U (en) | 2018-10-22 | 2018-10-22 | Steel connector titanium alloy drilling rod and drill string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821714371.6U CN209195280U (en) | 2018-10-22 | 2018-10-22 | Steel connector titanium alloy drilling rod and drill string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209195280U true CN209195280U (en) | 2019-08-02 |
Family
ID=67408732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821714371.6U Active CN209195280U (en) | 2018-10-22 | 2018-10-22 | Steel connector titanium alloy drilling rod and drill string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209195280U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236194A (en) * | 2018-10-22 | 2019-01-18 | 中国石油天然气集团有限公司 | A kind of steel connector titanium alloy drilling rod |
| CN114396235A (en) * | 2021-12-22 | 2022-04-26 | 上海海隆石油管材研究所 | Titanium alloy drill rod connecting structure with strip steel joints at two ends |
-
2018
- 2018-10-22 CN CN201821714371.6U patent/CN209195280U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236194A (en) * | 2018-10-22 | 2019-01-18 | 中国石油天然气集团有限公司 | A kind of steel connector titanium alloy drilling rod |
| CN109236194B (en) * | 2018-10-22 | 2024-07-26 | 中国石油天然气集团有限公司 | Titanium alloy drill rod for steel joint |
| CN114396235A (en) * | 2021-12-22 | 2022-04-26 | 上海海隆石油管材研究所 | Titanium alloy drill rod connecting structure with strip steel joints at two ends |
| CN114396235B (en) * | 2021-12-22 | 2024-05-24 | 上海海隆石油管材研究所 | Titanium alloy drill rod connecting structure with steel connectors at two ends |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9885214B2 (en) | Threaded tool joint connection | |
| CN102900377B (en) | Threaded connection type all-aluminum alloy drill stem | |
| CN104481422B (en) | A kind of aluminium alloy drill pipe body and the attachment structure of steel joint | |
| CN105672904B (en) | A kind of direct linkage type hermetic seal casing for high temperature and pressure ultradeep well | |
| US20160319966A1 (en) | Threaded joint for heavy-walled oil country tubular goods | |
| CN104712279B (en) | Coiled tubing hydraulic double-way jar | |
| CN209195280U (en) | Steel connector titanium alloy drilling rod and drill string | |
| CN109236194A (en) | A kind of steel connector titanium alloy drilling rod | |
| CN103628827A (en) | Anti-bonding three-stage end surface metal sealing threaded connector for titanium alloy pipe | |
| RU88729U1 (en) | BORING PIP JOINT | |
| CN202900066U (en) | Externally-flush geological drill rod using double-top double-cone connection form | |
| CN201013257Y (en) | Oil pipe coupling | |
| CN101806197A (en) | Air-sealed saw-tooth threading connector and oil bushing and connecting hoop using same | |
| CN212614554U (en) | Steel joint titanium alloy pipe body threaded connection type light drill rod | |
| US9771761B2 (en) | Torque enhanced threaded connection | |
| CN202039786U (en) | Connecting structure for high-pressure well completion oil pipe | |
| CN210714497U (en) | Double-layer combined sleeve | |
| CN206329284U (en) | A kind of dual hermetic seal special buckle oil pipe of metallic elastic | |
| CN205778593U (en) | A kind of anti-galling drilling tool thread joint | |
| CN111894476A (en) | Steel joint titanium alloy pipe body threaded connection type light drill rod | |
| CN106567679A (en) | oil drill pipe | |
| CN202325279U (en) | Direct-connected heat-insulated oil tube for thermal recovery wells | |
| CN115182686A (en) | Threaded connection structure for pipe column | |
| CN219953263U (en) | Aluminum alloy drill rod of titanium alloy joint | |
| CN114439384B (en) | Casing pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |