1 Oceanographic and meteorological support Before planning an offshore operation it is essential to obtain information on the weather in the area. Wind, wave and current conditions have a major impact on the types of vessels that may be used and their ability to operate with minimum downtime. In some areas there may be seasonal … Surveying requirement for exploration well
This article describes the Stand-by vessel (SBV) and Fast Rescue Craft (FRC) duties, equipment and standards 1. Duties The Master of the stand-by vessel shall ensure that: Portable radio sets and other life-saying equipment are maintained in good working conditions at all times. A 24-hour radio and visual watch on the rig is maintained. In … Stand-by vessel duties, equipment and standards
The objective of abandonment is to prevent the migration of all formation fluids, but especially hydrocarbons, between formations and to the surface. There are two types of conduit which must be closed off – the open hole plus casing and the annuli. Key requirements In the open hole all intervals which contain hydrocarbons should be … Abandonment guidelines
Fishing Assemblies and tools.Fishing is the general term used to describe the special techniques that are employed to recover items or equipment from downhole. Details of tools, equipment, and procedures are included in this section. 1. Standard fishing assembly: Overshot – Fishing bumper sub – DC – fishing jar – DC’s – Accelerator – HWDP. … Fishing Assemblies and tools
Heavy pulling and jarring shall be carried out using the top drive/ kelly on the string. On those rare occasions where this is not possible, the elevator latch shall be secured by means of a rope or chain. Remove the kelly spinner (if possible) before any jarring with the kelly is done, to avoid damage. … Jarring precautions
In case of lost Sidewall Sample Bullets, the following guidelines should be considered … If bullets are lost in the hole, run in with a rockbit (without nozzles) and junk sub, and rotate and circulate along the sections where the bullets were lost in an attempt to dislodge them from the wall of the hole. … Lost Sidewall Sample Bullets
Conditions for a successful back-off: a) The string shot strength should be sufficient to back-off the pipe without causing damage to the pipe or the connection. The size of the shot should be advised by the Logging Contractor, and depends upon the depth of the back-off attempt, and whether the back-off is in the drill … Back-Off Procedures
In many drilling operations, the drill string is stuck while pulling out after first having experienced tight hole, swabbing and overpulls. This indicates the following shortcomings: Pulling out has continued for too long without remedial action. Drilling personnel have been allowed to struggle on their own without supervision or advice. Deterioration of the hole or … Pipe Sticking
The following guidelines should be considered to to avoid hole related problems …. 1. In 12 1/4″ hole, do not use 9 1/2″ drill collars. Reduce the number of drill collars by replacing them with HWDP if possible. 2. When reaming long intervals, use the minimum practical number of drill collars, (see (1) above concerning … How to avoid Hole Related Problems
If any tight hole is experienced when drilling with water the followint actions should be taken to prevent stuck pipe: – With kelly: Immediately pull the string back to above the tight spot (after having spotted a viscous slug) and ream the complete interval until no more overpull is experienced. – With top drive: Backream … Overpulls/ Stuck Pipe In Surface Hole