Drilling pump UNB-600

Contents

Contents

Introduction

1 Purpose of the boring pump UNB-

2 Structure and operating principle of UNB-

3 Preparation of kinematic diagram of UNB- drilling pump

4 Selection of types and sizes of drilling rig machines and units

5 Definition of functional assignment parameters

6 Check calculation of basic units and parts

6.1 Calculation of drill pump rod for strength

6.2 Calculation of valve parts

6.3 Calculation of pump hydraulic box

6.4 Calculation of leak in the seal

6.5 Compaction Unit Calculation

6.6 Calculation of basic parameters

6.7 pneumatic compensator calculation

7 Rules of installation and operation of UNB- pump

Conclusion. Conclusions

List of sources used

Introduction

At drilling and oil production plants, pumping plants are one of the main types of equipment, the reliable operation of which ensures the continuity of the technological process.

Pumping equipment is used to pump liquids with different physicochemical properties (acids, alkalis in a wide range of concentrations, organic products, liquefied gases and the like) at different temperatures.

Pumped liquids are characterized by different temperature and crystallization, explosion hazard, toxicity, propensity for polymerization and sticking, content of soluble gases, etc.

Almost all pumping equipment is repaired by enterprises that also manufacture the entire required volume of spare parts. Therefore, the operational reliability of the pumps depends to a large extent on the qualification of the repair personnel and the quality of the repair work.

The enterprises pay great attention to improving the operation and repair of pumping equipment. However, practical achievements in this are still insufficient, and with few exceptions, the technical and organizational level of repair is below the level of production of the corresponding machines.

In many cases, the poor quality of repairs is due to the lack of maintenance documentation and the lack of spare parts. As a result, the efficiency of pumping equipment is reduced.

Installation and Operation Rules

Installation, loading and unloading operations and movements of weights should be carried out under the guidance of the employee responsible for safety of work.

For the period of interruption of installation and removal works it is forbidden to leave the parts of the mounted equipment in suspended condition.

It is forbidden to be under the lifted load and in the way of its movement.

It is forbidden to use lifting cranes to drag weights under the boom, pull out the load clamped between other objects, tear off objects that have been dragged or deepened into the ground.

When operating the pump, it is necessary to follow the safety rules in the oil and gas industry approved by Gosgortekhnadzor.

The pressure gauge on the pressure line must be installed so that its readings are clearly visible to the maintenance personnel, and the dial is in the vertical plane. The pressure gauge must be selected with such a scale that, at the highest operating pressure, its arrow is in the middle of the scale. On the scale, the highest operating pressure of 25.0 MPa must be marked with a red line.

It is allowed to start the pump with a pre-supplied sound and light signal, only with fully installed barriers.

When filling the pneumatic compensator with neutral gas or air, it is necessary to take measures that exclude the possibility of combustible substances entering the gas cavity. Before the pneumatic compensator is disassembled, the gas filling it must be completely released from it. The gas pressure in the pneumatic compensator is checked by the pressure gauge when the pump is stopped.

Before starting the pump in winter, it is necessary to warm the discharge pipe from the safety valve with steam.

In order to eliminate the accumulation of sediment in the cavities of the safety valve in the supply hole, it is necessary to periodically check the safety valve. The control operation of the safety valve is performed at least after 100 hours of operation of the pump (at this time the pump operation time and idle time are included), as well as after each long shutdown.

In winter, at an ambient temperature below 0 С before starting the pump, after a long stop, that is, more than 8 hours, the lower part of the pneumatic compensator housing must be warmed up to + 20 - + 30 С.

No work shall be performed on the pump in operation except for work related to tightening of the rod seal, cylinder cover, cylinder bushing and valve cover.

During operation of the pump, it is necessary to constantly monitor the cleanliness of the pump and the room in which it is located.

It is necessary to timely eliminate all faults detected during inspections and during operation, immediately replace unserviceable parts and parts.

It is necessary to constantly monitor the reliable tightening of threaded connections. The highly loaded threaded connections of the hydraulic unit require special attention, since slight weakening leads to damage to the threaded connections and wear of the mounting and sealing surfaces.

It is necessary to change oil in the tank of the drive part and bearing units of the transmission and crank shafts in a timely manner, and in the tank of the rod lubrication system replace oil as clayey solutions are contaminated.

Do not allow long-term operation of the pump at pressures exceeding those specified in the technical characteristic. Only short-term overpressure is allowed, but not more than 10% within 5 minutes. All hydraulic unit parts operating at a pressure of 25 MPa (250 kg/cm) shall be tested at a hydraulic pressure of 37.5 MPa (375 kg/cm) for 5 minutes at the manufacturer's factory.

The direction of rotation of the transmission shaft must correspond to the direction indicated on the frame by the arrow, that is, in the direction in which the pump gear is rolled. The most preferred direction of rotation of the transmission shaft is clockwise.

The pump gear is rolled up without load for 0.5 hour, with load 75% from rated power - 1 hour and 95% - 1 hour. Total contact spot in toothed engagement in percent: in height not less than 45; in length not less than 60.

It is necessary to remove the pumped liquid completely in winter at negative temperatures and long-term stops of the pump from the hydraulic unit, and before starting in winter at negative temperatures, warm the hydraulic unit to + 10 - + 15 С or pour hot pumped liquid.

It is necessary to monitor the quality of the clay solution, preventing sand content of more than 5%. Cylinder sleeves cannot be left idle even for a short time, as they are difficult to remove from hydraulic boxes due to corrosion, sand, weighting agent and solidified drilling fluid.

The suction depth in cases where the liquid level is below the axis of the pump cylinder does not exceed 1.5 meters on the bushings 0 200 mm, and 2.2 meters on the bushings 0 130 mm.

Conclusion. conclusions

The long-term practice of deep well drilling has established that the only suitable well wiring technology is a piston horizontal piston pump, which pumps flushing fluid into the well through the drill string in order to clean the bottomhole and wellbore from drilled rock (sludge) and carry it to the day surface; cooling and lubrication of the bit; creating a hydromonitory effect during drilling with jet bits; actuation of downhole hydraulic motors.

Drilling pumps are the main energy consumers (7080%). The capacity of modern pumps is 3002000 kW. For each type of drilling rig, the pump shall have a certain power, supply and pressure. Pumps are installed at a distance of up to 100 m from well head under canopy or in disassembly shelter. The weight, dimensions and design of the pump should allow its transportation both by fishing vehicles and by fibre within the field, and sometimes up to 100 km, for which the pumps are equipped with a rigid frame - skids.

Two-piston double-acting pump UNB600 was considered in this course design. The practice has shown that it has proved to be positive and can be successfully used in drilling rigs, both in summer and in winter. It describes the purpose of the pump, the principle of operation, the main parameters are given, the main units and parameters of the pump are calculated.

A patent study was carried out to improve the valve assembly. The pump valve seat was also calculated using the "ANSYS" program.