Import Api 7-1 Downhole Drilling Motor For Oilfield — Buy in wholesale FOB from Supplier in China

The API 7-1 Downhole Drilling Motor is a positive displacement motor (PDM) that converts hydraulic energy from drilling mud into rotational mechanical energy at the bit. It consists of a power section with a helical rotor and elastomer stator, a bearing assembly, and a drive sub for bit connection. Dongying Lake Petroleum Technology Co., Ltd manufactures these motors in sizes from 57 mm (2-1/4 inch) to 244 mm (9-5/8 inch) outer diameter, covering applications from slim-hole re-entry through to large-diameter vertical drilling. The power section operates on the Moineau principle, where differential pressure across the stator-lobe pair generates eccentric rotation transmitted through a coupling assembly to the bit.

The motor construction includes a crossover sub for connection to drill string components, a safety catch sub for emergency retrieval, a multi-lobe chrome-plated rotor, and a nitrile or hydrogenated nitrile stator bonded into a steel tube. Bearing assemblies are typically thrust and radial types, lubricated by drilling fluid, with carbide or diamond insert wear pads. Operating differential pressure ranges from 2.1 MPa to 7.0 MPa depending on size and lobe configuration, with output torques from 1,500 Nm for smaller motors to above 25,000 Nm for larger units. Speed is inversely proportional to torque in positive displacement operation, with bit speeds typically 50 to 300 rpm under load.

These motors are deployed in directional drilling, horizontal well construction, hole opening, re-entry workovers, and vertical well straight-hole drilling where rotary table speed is insufficient. Operators include national oil companies, independent drilling contractors, and directional drilling service providers. The supplier's literature references compound drilling and traversing applications, indicating suitability for integrated steerable systems. Trade specifics such as unit price, MOQ, manufacturing lead time, and warranty terms are not present in the source data and require direct supplier confirmation.

Dongying Lake Petroleum Technology Co., Ltd maintains its address on Huanghe Road, Dongying 257000, China, a slightly different street from the casing cup tester listing, which places the company on Huanhe Road. This suggests either multiple facilities, a data entry variation, or relocation within the same district. The supplier tier is imported, with harbor trust status, and the response metrics show 0.00 percent response rate with zero recorded average response hours. These signals indicate minimal or no active engagement through the platform channel.

The company brands its drilling motor line as LAKE MOTORS, positioning it as a proprietary product range within the petroleum equipment sector. No data is provided on production capacity, number of machining centres, rotor grinding capabilities, stator bonding equipment, or in-house testing infrastructure. There is no mention of API Q1 quality management, ISO 14001 environmental certification, or specific oilfield operator approvals. Buyers should request factory layout details, equipment lists, and evidence of rotor-stator fit testing before committing to volume orders.