Technical index

Power supply: 220V AC 50HZ; temperature resistance: 175℃; pressure resistance: 140Mpa; maximum instrument diameter: 80mm; suitable wellbore size: Φ118-410mm; pre-test volume: 0-10ml adjustable; pumping speed: 0.5ml/s - 3ml/s adjustable; strain pressure sensor: accuracy ±0.1%, resolution ±0.001%, repetition rate, ±6psi; quartz pressure sensor: accuracy ±0.02%, resolution ±0.01psi, repetition rate, ±1psi.

Geological application

Understand formation pressure changes, detect water injection effects, analyze inter-layer conflicts; analyze formation fluid properties, determine water flooding levels of development wells, determine the migration of oil, gas and water interfaces; perform formation comparison and connectivity analysis; perform single-layer productivity prediction, Analyze the production capacity of the oil well; determine the position of the static liquid level.

Technical advantages

SFT (Small diameter Formation Tester) adopts the diamond push-back technology to realize the small diameter of the instrument on the basis of the conventional formation tester, which makes up for the insufficiency of sidetracking and slim hole wells in obtaining formation pressure. The pre-test chamber is adjustable, and the pumping speed is adjustable, which makes up for the shortcomings of conventional formation testers that are not suitable for low-permeability oil fields. Using DC motor technology, the pumping force is large, and the maximum suction force of the park port is not less than 80Mpa.