High-resolution micro imager (HMI®) service is a fast and efficient way to capture virtually all reservoir features in a single run, including dip and fracture detection, sedimentary feature characterization, thin-bed evaluation, facies analysis, oriented resistivity and dipmeter computation. Structural analysis from the HMI service detects and defines faults, determines structural dip in fractured formation, and visualizes complex structures.
Weatherford’s conveyance systems service is provided by two ranges of complementary equipment: standard and Compact™ tools. Standard tools are based on OD tools greater than 3 3/8-in., with upper limits of 20,000 PSI (137.9 MPa) and 350°F (177°C). Compact equipment is based on the latest technology in 2 1/4-in. sondes, providing unrivaled access and unique methods of conveyance, including memory operations.
The high-angle logging (HAL™) system allows acquisition of high-quality log data in difficult, highly deviated or horizontal wells, where logging tools cannot be lowered in the zone of interest by gravity. The HAL system logging procedure mechanically connects the logging assembly to the drill string, using a specially designed latch and a reliable wet connection.
The entire assembly is then tripped into the hole until the logging tools reach the zone of interest. A special side-entry sub (SES) is made up to the tubular sting, allowing the wireline and uphole wet-connect spear to be lowered or pumped onto the downhole assembly. Our technicians then test the wet connection to the logging tool stack and clamp the wireline tightly onto the SES.
To prevent potential damage to the wireline, in open hole, the SES is not lowered below surface casing. If necessary, fluid can be circulated through the downhole latch to facilitate progress of the tubular into the well.
Logging occurs when the tubular string is tripped out of the hole and over the interval to be logged. The wireline unit retrieves the logging cable as pipe is tripped, and a continuous log is produced in real time over the logging interval.
The Compact well shuttle (CWS) replaces quad-combo wireline pipe-conveyed logging (PCL), and provides a cost-efficient alternative to FE-LWD in wells that can be drilled without real-time formation evaluation. The CWS can deliver formation evaluation data when other logging solutions have failed.
The CWS is a hybrid deployment system that uses memory open-hole logging tools conveyed inside drillpipe after drilling. The CWS terminates in a mule shoe for typical operations, but it can be configured with a reamer bit and hole-opening rasp for bad hole conditions.
The through-bit logging (TBL) system consists of a Compact tool string, a drill bit with an insert that can be removed from the bit, a latching mechanism for selectively removing the insert from the bit, and a running tool that interacts with the latch to enable the insert and logging string to move out of the bit.
The coiled tubing (CT) conveyance is in many ways the ideal deployment method for logging tools. Speed and depth control are good, and deployment is possible in underbalanced wells. If the coil has a pre-installed electric line, power and data can be transmitted directly. For the 95 percent of CT units with no electric line, Compact memory logging is the solution.