High-performance ultrahigh-temperature-resistant composite material motor

Abstract

The utility model belongs to the technical field of roller bits, and particularly relates to a high-performance ultra-high-temperature-resistant composite motor which comprises a composite double-helix power sleeve, an inner helix stator, a light hollow rotor, a locking double-helix upper sleeve and a locking double-helix lower sleeve. The locking double-spiral upper sleeve and the locking double-spiral lower sleeve are screwed into the inner spiral stator and are fixed at the two ends of the composite material double-spiral power sleeve, and the light hollow rotor is matched with the composite material double-spiral power sleeve. The cable can resist high temperature of 180-260 DEG C and low temperature of-50 DEG C, can be continuously and stably used at the high temperature of 260 DEG C, still can keep excellent mechanical performance, and can be used at the high temperature of 310 DEG C for a short time.

Description

Technical Field

[0001] The utility model belongs to the technical field of drill bits, and in particular relates to a high-performance ultra-high temperature resistant composite motor. Background Art

[0002] As the domestic oil and gas exploration drilling depth continues to deepen, the bottom hole temperature continues to rise. When the bottom hole circulation temperature exceeds 180℃, the conventional high temperature resistant rubber screw drill motor cannot be used normally at a well temperature greater than 180℃. Exceeding this well temperature will cause the motor adhesive to fail, rubber to fall off, etc., which will cause frequent tripping and replacement of screw drills, increase drilling costs, and reduce drilling efficiency. In recent years, domestic screw manufacturers have been developing high temperature resistant motors of 210-220℃. At present, the technology is not mature and cannot be used for a long time, making the deep well ultra-high temperature well drilling mode face greater challenges. There is an urgent need for a screw drill motor that can withstand ultra-high temperatures of 180-260℃ to cooperate with drilling for deep exploration (9000-13000 meters). Utility Model Content

[0003] The purpose of the utility model is to provide a high-performance ultra-high temperature resistant composite motor to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-performance ultra-high temperature resistant composite motor, comprising a composite double-helix power sleeve, an inner helical stator, a lightweight hollow rotor, a stop double-helix upper sleeve and a stop double-helix lower sleeve, the composite double-helix power sleeve is screwed into the inner helical stator, the stop double-helix upper sleeve and the stop double-helix lower sleeve are also screwed into the inner helical stator and fixed at both ends of the composite double-helix power sleeve, and the lightweight hollow rotor cooperates with the composite double-helix power sleeve.

[0005] Preferably, one end of the lightweight hollow rotor is connected to a flow-guiding anti-drop connecting rod, the flow-guiding anti-drop connecting rod is located in the substitute anti-drop joint, the outer diameter of the end of the flow-guiding anti-drop connecting rod is larger than the inner diameter of the inner hole of the substitute anti-drop joint, and the substitute anti-drop joint is threadedly connected to the inner spiral stator.

[0006] Preferably, the other end of the lightweight hollow rotor is connected to a titanium shaft upper joint, and the titanium shaft upper joint is connected to one end of the pin-type titanium shaft through a locating pin.

[0007] Preferably, the titanium shaft upper joint and the pin-type titanium shaft are located in a sealed universal shaft housing, and the sealed universal shaft housing is threadedly connected to the other end of the inner spiral stator.

[0008] Preferably, the outer ends of the stop double-helix upper sleeve and the stop double-helix lower sleeve are respectively limited by the anti-locking joint and the sealing universal housing.

[0009] The beneficial effects of the utility model are as follows: the utility model is resistant to high temperatures of 180-260°C and low temperatures of -50°C, can be used continuously and stably at a high temperature of 260°C and still maintain excellent mechanical properties, and can be used at a high temperature of 310 degrees for a short period of time; the composite motor material is self-lubricating and has a low friction coefficient, is wear-resistant, and can work stably in many extremely harsh use environments such as high temperature, high load, and strong corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the front section of the utility model;

[0011] Figure 2 It is a schematic diagram of the middle section of the utility model;

[0012] Figure 3 It is a schematic diagram of the last section of the utility model. DETAILED DESCRIPTION

[0013] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0014] like Figure 1-3 As shown, a high-performance ultra-high temperature resistant composite motor includes a substitute anti-joint 1, a flow-guiding anti-drop connecting rod 2, a first O-ring 3, a second O-ring 4, a stop double-helix upper sleeve 5, an inner spiral stator 6, a composite double-helix power sleeve 7, a lightweight hollow rotor 8, a stop double-helix lower sleeve 9, a third O-ring 10, a sealing universal housing 11, a titanium shaft upper joint 12, a positioning pin 13, a pin-type titanium shaft 14, and a titanium shaft lower joint 15; the first O-ring is installed in the substitute anti-joint; the second O-ring is installed in the flow-guiding anti-drop connecting rod; the third O-ring is installed in the sealing universal shaft housing; the titanium shaft upper joint is installed on the pin-type titanium shaft; the titanium shaft The lower joint is installed on the pin-type titanium shaft; the positioning pin is installed on the upper joint of the titanium shaft and the lower joint of the titanium shaft; the composite double-helix power sleeve is screwed into the inner spiral stator; the stop double-helix upper sleeve is screwed into the inner spiral stator; the stop double-helix lower sleeve is screwed into the inner spiral stator; the lightweight hollow rotor is connected to the upper joint of the titanium shaft; the anti-joint is connected to the inner spiral stator; the sealed universal shaft housing is connected to the inner spiral stator; the lightweight hollow rotor and the titanium shaft are installed in the inner spiral stator and the inner sealed universal shaft housing; the guide anti-drop connecting rod is connected to the lightweight hollow rotor; high power output, the composite motor structure has a single-stage pressure of 2.5-3.5Mpa. The motor structure is short, and the 2-stage composite motor can achieve 2 times the output performance of rubber. Significantly improve the drilling speed.

[0015] The high-performance ultra-high temperature resistant composite motor is a downhole power drill that uses drilling fluid (or compressed gas) as the power source. It is a positive displacement motor. The drilling fluid output by the mud pump or the compressed gas output by the compressor enters the screw drill motor from the drill string, forming a certain pressure difference at both ends of the motor, driving the motor rotor to rotate, and transmitting the torque and drilling speed to the drill bit through the universal shaft and the transmission shaft to break the rock and drill.

[0016] The backflow integrated anti-drop connecting rod structure is adopted, which has higher structural safety. In case of thread disengagement or breakage, the pump will not be blocked when it is lifted off the bottom of the well. However, the pump pressure is very high, which is convenient for the driller to find problems and deal with them in time. The bottom hole circulation can achieve small displacement top-through, which is convenient for handling underground accidents.

[0017] This device adopts a composite material inner and outer spiral power bushing and an inner spiral stator threaded connection structure. The composite material inner and outer spiral power bushing can be used continuously and stably at ultra-high temperatures of 180-260°C. The inner and outer spiral power bushings are fixed by a structure of inner and outer double spiral power upper and lower sleeves, which makes the motor work more stable, there is no wire blockage on the outer wall of the stator, and the motor stator is safer. The composite material motor has self-lubrication and a low friction coefficient. It is wear-resistant and can work stably in many extremely harsh use environments such as high temperature, high load, and strong corrosion. The composite material inner and outer spiral power bushing is easy to process, has both toughness and rigidity, and the material is corrosion-resistant, anti-aging, and anti-solvent.

[0018] The anti-corrosion joint and the sealing universal housing are connected with an inner spiral static seal to avoid corrosive fatigue of the connecting threads and improve the working stability of the overall structure.

[0019] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A high-performance ultra-high temperature resistant composite motor, characterized in that: The invention comprises a composite double-helix power sleeve, an inner helical stator, a light hollow rotor, a stop double-helix upper sleeve and a stop double-helix lower sleeve. The composite double-helix power sleeve is screwed into the inner helical stator. The stop double-helix upper sleeve and the stop double-helix lower sleeve are also screwed into the inner helical stator and fixed at two ends of the composite double-helix power sleeve. The light hollow rotor cooperates with the composite double-helix power sleeve.

2. The high performance ultra-high temperature resistant composite motor according to claim 1, characterized in that: One end of the lightweight hollow rotor is connected to a flow-guiding anti-drop connecting rod, which is located in a substitute anti-drop joint. The outer diameter of the end of the flow-guiding anti-drop connecting rod is larger than the inner diameter of the inner hole of the substitute anti-drop joint, and the substitute anti-drop joint is threadedly connected to the inner spiral stator.

3. The high performance ultra-high temperature resistant composite motor according to claim 1, characterized in that: The other end of the lightweight hollow rotor is connected to a titanium shaft upper joint, and the titanium shaft upper joint is connected to one end of a pin-type titanium shaft through a locating pin.

4. The high performance ultra-high temperature resistant composite motor according to claim 3, characterized in that: The titanium shaft upper joint and the pin-type titanium shaft are located in a sealed universal shaft housing, and the sealed universal shaft housing is threadedly connected to the other end of the inner spiral stator.

5. The high performance ultra-high temperature resistant composite motor according to claim 2, characterized in that: The outer ends of the stop double-helix upper sleeve and the stop double-helix lower sleeve are respectively limited by the anti-locking joint and the sealing universal housing.

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