Fishing Tightly Packed, Wadded Up Sandline inside of 4 1/2" 11.60# Casing
Location: Wray, Colorado
Fishing Situation: Sandline parted with over 300’ of sandline remaining inside of 4 ½” ll.6# casing. Rig company ran a bit in an attempt to "push down" the parted sandline below the perfs. This resulted in a “bird’s nest” of sandline, balled up inside the casing and packed tightly to the casing ID.
Objective: Remove Parted Sandline from Wellbore, using fishing tools expertise and strategy.
Fishing Supervisor: Jeffrey D. Sokol
The fishing tool supervisor arrived on location, followed by the necessary equipment to efficiently remove the sandline from the wellbore. As the fisherman consults with the operator further, he discovers the severity of the situation and actually what had taken place.
The Fishing Supervisor made an initial attempt with a wireline rope spear, which is the “S.O.P.” tool to use in this type of situation. The attempt was unsuccessful, since the sandline was already packed down tight. TOOH
(In meantime, Fishing Supervisor orders a “Bulldog Wireline Scru-Grab” sent to location)
Fishing Supervisor determines that the sandline is packed down, and runs a carbide milling shoe in an effort to mill over the packed sandline, as one would a permanent packer to break up that ball. The power swivel that the rig provided wouldn’t operate, so they were forced to use the tongs to mill. This obviously wasn’t working so they tripped out.
Fishing Supervisor takes the same milling shoe, a cutting torch, and a grinder and decides to make a new tool. He made a “V Slot Alligator Grab”. The idea was to bevel the I.D. of the tool, and get around the O.D. of the ball. Sometimes a Fishing Supervisor needs to improvise and be creative to find a solution, and this was one of those times. They ran the Alligator Grab, top bushing, a bumper jar, oil jar, 4 drill collars, and a crossover back to the work string. When they got to bottom, they picked up and jammed the newly created tool onto the ball, several times, and were able to determine that headway was being made with the marks on the pipe. They could tell that either they were pushing the ball downhole, or it was going into the Alligator Grab as designed. Below is the result:
Due to the “pigtail” hanging from the bottom of the Alligator Grab, the Fishing Supervisor determined that the Scru-Grab he previously ordered would be a good next run, since he was convinced the “ball” was broken up. It was also convenient that the Scru-Grab had just arrived on location. The Scru-Grab is designed to “dig” into the remaining ball with rotation. This could be done with the tongs.
Wireline Scru-Grab with a 3 7/8” OD stop plate to keep wire from getting up around the jars
4 Drill Collars
Below is the result:
With the Scru-Grab, the Fishing Supervisor was able to clear out the rest of the ball, and pull the remaining sandline from the hole to the satisfaction of the customer. The fishing job was successful and the job was completed.
When sandline, wireline, or slickline parts in the hole, the first call needs to be to an experienced Fishing Tool Supervisor (preferably at Dynasty Downhole Services), and he will come up with a solid plan backed up with years of experience to clean the debris from your well and get you back in business.
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