120056 Series & 130012 Series & DQ Series Oilfield Hydraulic Component

1. Product Overview & Core Application Purpose

This full set of hydraulic and mechanical accessories covering 120056, 130012 and DQ serial part numbers is professionally engineered for heavy-duty oilfield drilling and workover rig hydraulic systems. Targeting the core demands of oilfield engineering teams for equipment stability, torque control, pressure regulation and long-cycle operation, these components solve common industry pain points including hydraulic system leakage, torque imbalance, piston positioning deviation and motor pump assembly failure. All products comply with API 7K international oilfield equipment manufacturing standards, with a tested service life of 18,000 hours under rated working load, 3,000 hours longer than conventional generic parts. As core supporting parts for drilling rig hydraulic power units and balance cylinder systems, the whole series realizes precise pressure acquisition, stable power transmission and reliable sealing protection for field operation equipment.

2. Core Function Description

The product portfolio integrates pressure regulation, torque elimination, sealing protection, power drive and structural connection functions. Reversible electric valves and manual reversible valves achieve bidirectional hydraulic circuit switching to adapt to alternating load operation of drilling rigs. Pressure detection connectors and pressure regulating valves ensure real-time monitoring and dynamic adjustment of hydraulic system pressure, avoiding overload operation of equipment. Special-sized dies, wedge blocks and threaded rods complete precise positioning and load adjustment of mechanical structures, while motor pump assemblies and oil tank components provide stable power output and oil circuit circulation. Various sealing rings, gaskets and bushing parts eliminate hydraulic oil leakage risks, and positioning pins, connecting plates and intermediate beams ensure the overall structural rigidity of the equipment.

3. Structural Characteristics

All components adopt integrated modular structural design, featuring high assembly compatibility and disassembly convenience. The anti-torque intermediate beam adopts integral forging molding technology, which avoids structural deformation under high torsion working conditions. Precision O-rings and rubber gaskets adopt imported fluororubber raw materials, with stable sealing performance in high-temperature and high-pressure oil medium environments. Pipe crimping fittings adopt one-time crimping molding process, with no gap deviation in connection positions. Self-aligning thrust bearings and cylindrical roller bearings adopt precision grinding process, reducing mechanical friction resistance effectively. All threaded structural parts follow unified oilfield standard thread parameters, realizing universal replacement of old and new parts.

4. Applicable Working Conditions

This series of parts is suitable for onshore and shallow offshore oilfield drilling, workover and well completion operations, adapting to ambient temperatures ranging from -35℃ to 55℃ and hydraulic system working pressure up to 35MPa. It is applicable to conventional rotary drilling rigs, hydraulic workover rigs and balance cylinder auxiliary systems, and can stably operate under continuous heavy load, frequent start-stop and alternating torsion working conditions. The complete set of components matches the full-load operation demand of medium and large oilfield equipment, and is compatible with mainstream hydraulic power system configurations in the oil and gas extraction industry.

5. Professional Maintenance & Engineer Practical Suggestions

For daily maintenance, field staff shall inspect sealing components and pipeline fittings every 200 working hours to check for aging and loosening. Bearings and key structural pins need regular grease replenishment every 800 working hours. The motor pump assembly and oil tank assembly require hydraulic oil replacement and internal dirt cleaning every 3,000 working hours. Professional engineers emphasize a key operation pitfall: avoid over-tightening trapezoidal threaded adjusting rods during equipment debugging, which will cause structural jamming and thread wear. All maintenance operations must comply with API recommended maintenance specifications to ensure consistent equipment operating efficiency and extend component service life.

We supply the following spare parts:

1300127658 Электрический реверсивный клапан

DQ020.12.18 Прокладочное кольцо

1200568142 Подъемное ушко балансировочного цилиндра

1300000764 Соединитель для отбора давления

1300127376 Трубный обжимной фитинг

1200567647 Клинья (левая)

1200529562 Крышка внешняя

DQ020.12.28 Резиновая прокладка

DQ027.23.02.00Ⅱ Промежуточная балка для исключения крутящего момента

1200586136 Соединительная планка

1200528202 Палец

1200525394 5.5″ Плашка

DQ027.01.09.02 Сухарь 6 5/8″

1300031530 Винт с цилиндрической головкой и шестигранным углублением

1200529582 Фрикционная втулка

DQ027.08.01.00 Электродвигатель-насос

1200529212 Палец 2

1300035406 Прецизионное О-образное кольцо

1200568106 Регулирующий трапецевидный резьбовой стержень

1300016409 Трубный обжимной фитинг

1200419487 Установочный блок поршня

1300102095 Самоцентрирующий упорный подшипник

DQ027.21.09Ⅱ U-образная упорная скоба

1200437874 Крышка люка ремонтная

1300036189 Такелажная скоба

1300127671 Шланг в сборе

DQ027.23.01.08Ⅱ Палец 2

1300111785 Клапан регулирования давления

DQ026.01.08.00 5.5″ Плашка

1300036898 О-образное кольцо

1300016692 Ручной реверсивный клапан

DQ026.01.09.01 Упор плашки 3.5″

1300123551 Шланг в сборе

1300108743 Устройство для увеличения крутящего момента

DQ027.23.01.07.00Ⅱ Планка с двумя ушками 2

DQ027.08.03.01.00 Опора выключателей

1200528093 Корпус трубного зажима с отверстиями

DQ027.12.05 Зубчатое колесо вращателя

DQ027.08.02.00 Маслобак в сборе

1300102782 Шпонка на лыске

DQ027.12.37Ⅱ Маслосборник

1200568078 Направляющая крышка в сборе

1300113037 Стопорная прокладка

1300108799 Аккумулятор

1300126405 Уплотняющая прокладка крышки очистки

1200568178 Левая панель заглушки

DQ027.01.04 Ось поворота

1300004798 Шплинт

1300037642 Односторонний прессованный канатный

1300016390 Цилиндрический роликовый подшипник

6. On-Site Fault Maintenance Cases

Case 1: Karamay Oilfield, Model ZJ40 Drilling Rig, 280t rated load. The hydraulic pressure regulation system failed to stabilize pressure, with pressure fluctuation of 4-8MPa. After replacing 1300111785 pressure regulating valve, the system pressure fluctuation is controlled within 0.5MPa, and continuous stable operation is realized. The customer feedback that the fault downtime is reduced by 90%.

Case 2: Daqing Oilfield, Model XJ350 Workover Rig, 160t working load. The balance cylinder lifting lug was deformed, causing unbalanced equipment operation. After replacing 1200568142 balance cylinder lifting lug, the equipment operation deflection is reduced to less than 1mm, meeting field operation standards.

Case 3: Shengli Oilfield, Model ZJ50 Drilling Rig, 320t full load operation. Pipeline crimping fitting leakage occurred, resulting in hydraulic oil loss. After replacing 1300127376 pipe crimping fitting, zero leakage of hydraulic circuit is achieved, and the equipment maintains continuous operation for 1200 hours without secondary fault.

Case 4: Tarim Oilfield, Model XJ450 Workover Rig, 220t dynamic load. Motor pump assembly power output was insufficient. After replacing DQ027.08.01.00 motor pump assembly, the hydraulic power output reaches 100% rated value, and equipment operation efficiency is fully restored.

7. FAQ

8. Procurement Guidance & Industry Value

This full range of 120056, 130012 and DQ series oilfield hydraulic and mechanical components provides standardized, high-reliability replacement and supporting solutions for oil and gas extraction engineering equipment. All products pass strict factory performance testing and industry standard certification, with stable structural performance and strong environmental adaptability. For oilfield engineering teams and equipment maintenance enterprises, these standardized parts can effectively reduce equipment failure rate, shorten maintenance cycle and reduce comprehensive operation and maintenance costs. We support customized matching according to different drilling rig models and working condition demands, providing professional component selection and technical matching guidance for global oilfield equipment operation and maintenance, and serving the stable and efficient operation of oil and gas extraction equipment.