Electric wire-line logging may be subdivided into four distinct services: 1 Open hole logging. 2 Perforating and completion logging. 3 Production logging. 4 Miscellaneous auxiliary services. The logging programmes shall be fully specified in the drilling programmes for each well. The miscellaneous services such as free point indicator and back-off are specified as and when … Basics of Electric Wireline Logging
Acronyms for Baker Atlas logging tools. Back-off BO Bridge Plug BPS Borehole Compensated Acoustilog (Norm. Spacing) AC Borehole Compensated Acoustilog (Long Spacing) ACL Borehole Geometry Tool (4 Arm Calliper) 4CAL Calliper CAL Cased Hole Formation Tester CHFT Cement Bond Log CBLV Circumferential Borehole Imaging Log CBIL Check Shot Survey SLS Compensated Densilog CDL Compensated … Acronyms logging tools – Baker Atlas
This articles describes the mains guidelines and quality checks to be performed for successful logging operations 1. Preparation prior to logging operations: All wireline logging tools shall be checked and tested prior to rigging up. Logging operations shall commence when the hole conditions are stable. A check trip shall be required before running the formation … Wireline Logging Guidelines – Quality Control
This article describe the requirements for radioactive sources and explosives (permit to work, transporation, handling and storage). 1. Radioactive Sources Permit to Work All operations involving the use of radioactive sources must be performed under the Permit to Work system. Storage The radioactive sources must be stored in clearly marked approved storage containers (locked and … Radioactive Sources and Explosives
Stuck logging tools are one of the non-productive time incidents experienced in well operations. Before logging, the Drilling Supervisor shall verify that the hole is in good condition and the well is not live. He shall also record the logging weak-point tension, cable tension limit and tool weight in mud. The Logging Contractor’s stretch chart … Stuck Wireline Logging Tools
The Reverse Cut and Thread Method is recommended in case a logging tool containing a radioactive source is stuck and has to be fished. After this point the procedure deviates from the Cut and Thread Method. The weak point will not be broken when the fish has been latched into the overshot. The cable and … Wireline Logging Fishing – Reverse Cut and Thread Procedure
If a radioactive logging tool sticks in the hole, the following guidelines must be adhered to: Do not continue work the tool because this may result in accidentally breaking the weak link. The Drilling Supervisor shall provide the Operations Engineer and provide him with all relevant information regarding the position of fish, allowable tension of … Fishing Wireline with Radioactive Sources
The required equipment (Logging Contractor Fishing Kit) for both Cut and Thread and Reverse Cut and Thread methods are: Bowen overshot kit series 105 (H-131931) with a multiple choice of grapples and guides cable hanger kit (H-133930) with different sizes and weights of sinkerbars and at least two cable hangers. Rope socket kit (H-133929) subs … Fishing Equipment Required for Wireline Logging
Prior to any fishing operations ensure that all personnel involved are aware of their duties by means of a pre-operation safety meeting. Dressing the Tools Take a new grapple, grapple control and guide and assemble the overshot. Ensure that the correct type and size of grapple is used. Preparing the Cable The following procedures should … Wireline Logging Fishing – Cut and Thread Procedure
Pipe conveyed logging (PCL) logging is performed when conventional wireline operations are not feasible, such as in high angle/horizontal wells. If there is doubt as to whether wireline logging will be successful, consideration should be given to mobilising PCL equipment on standby, although the standby cost should be balanced against the likelihood of its required … Pipe Conveyed Logging (PCL) – Preparation and General Guidelines