Martin Decker (logging instru
OverviewThe Martin Decker is the core component of the well logging depth measurement system. It is used to measure well depth, tripping speed, cable tension, and differential tension, and features alarm functions for monitoring down hole instruments encountering resistance, sticking, over-speed,
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0086-18700710387 0086-17729551387
Product Introduction The Martin Decker is the core component of the well logging depth measurement system. It is used to measure well depth, tripping speed, cable tension, and differential tension, and features alarm functions for monitoring down hole instruments encountering resistance, sticking, over-speed, reaching the bottom of the well, and exiting the wellhead. Logging data consists of two categories: logging information and depth information — the accuracy of depth information directly determines the quality of logging data.During operation, the measuring wheel drives the optical grating disc as the cable moves, converting the cable's linear motion into photoelectric pulse signals: pulses per unit time indicate logging speed, while cumulative pulse count records logging depth. The depth pulses, after correction, are counted as depth signals and transmitted together with speed data via time-division multiplexing technology, sampled point by point under software control. The depth interrupt signal also serves as the system control signal for data sampling, ensuring precise depth positioning at each sample point Technical Features
● High-precision optical encoder with resolution up to 1mm, system accuracy better than ±0.05% ● Measuring wheels available in high-quality alloy steel or polyurethane coating, wear-resistant and durable, adaptable to various cable diameters ● Dual-channel quadrature encoder pulse output (A/B/Z), compatible with mainstream logging acquisition systems ● Overall protection rating of IP65, suitable for rain, snow, sandstorm and other harsh conditions ● Compact structure, easy to install, adaptable to various logging sheaves
Technical specifications
Technical parameters of Martin Decker measuring head
马丁代克计量面板技术参数
Notes:： 1） Equipment can be supplied for normal temperature, extreme cold, high temperature, offshore, explosion-proof and other environmental conditions upon request; 2） External interfaces/communication protocols: PN (PROFINET), CAN, USB and others available upon request; Products comply with SY/T 5079-2025 Petroleum and natural gas drilling and production equipment — Well testing equipment standard.
Application Scenarios
1) SMD-600D Martin Dyke
2) SMD-600S Martin Dyke
3) Other Martin Dyke
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