Divisions

Bonnett's Wireline offers a full range of Slickline services (click on the link to view details):

• Downhole Gauges 
• Slickline Perforating 
• Downhole Plugs 
• Fishing Lost and Stuck Tools 
• Swabbing 

Downhole Gauges  back to top
If you need to know what's going on downhole, pressure/temperature gauges may be the answer. Bonnett's Wireline Services has a full range of gauges for any pressure and any temperature. We carry ¾K, 1.5K, 3K, 3.5K, 6K, 10K and 16K gauges. That's a range of 5,171 - 110,316 kPa. We have gauges capable of downhole temperatures as high as 177 °C (350 °F). We use both quartz and sapphire strain gauges as well.

In addition to the usual methods of landing gauges, we have mounted slim hole gauges in a gauge carrier and ran them in the well on the tubing with great success. We have run gauges under a plug for Frac tests. And of course, we do the more conventional static gradients and build-up tests.

All of our trucks are capable of e-mailing data from location for rush jobs, as well as the ability to generate field reports in electronic or hard copy right in the truck.

Bonnett's Wireline Services knows how important your data is. That's why we only use the most reliable downhole gauges. We use CalScan, Stellar Tech, Spartek, and Panther gauges.

We have a goal of sending out test results within 24 hours of completion of the test. Within that time, we make every effort to send you a copy of the report in pdf format, as well as in pas and ascii file formats. The printed copy with files on disc usually follows the next day. Our reporting department is located in Calgary, Alberta so we can get you your results ASAP. We treat every job as a rush job.

Slickline Perforating  back to top
Slickline perforating is most commonly done on the tubing, and can be done either mechanically or with a propellant charge.

The illustration to the right is a demonstration of a mechanical perforator. The perforator is lowered on slickline to a previously set stop, or can be run with a stop attached. When the perforator is seated on the stop, a light downward jar will shear two small pins that hold the perforating mechanism in a neutral position. Once the pins are sheared, a light upward pull will push the punch into contact with the inner tubing wall, as well as force the serrated upper end of the housing to grip the tubing and hold the perforator in place. A moderate jar up forces the wedge to push the punch through the tubing wall. Another jar up will move the wedge past the punch, allowing it to recess inside the housing so the tool can be pulled out of the well.

The tool also has a safety shear pin towards the bottom of the tool. This pin can be sheared with a jar down, locking the punch in a non-perforating position, so it can be pulled from the well without perforating, if necessary.

Bonnett's Wireline Services also trains and certifies many of our operators and hands in the safe handling of explosives for use in perforators. Our explosive perforators have many uses, such as punching holes to circulate and kill a well, draining tubing, lifting water from low-pressure gas wells, circulating out sand or mud, opening zones, and operating plunger lift installations. Our perforators do not burn holes, but punch a clean, round hole of specified diameter. Bonnett's proudly uses Kinley Perforators.

Downhole Plugs  back to top
Bonnett's Wireline can provide landing nipples, sliding sleeves, blanking plugs, check valves, downhole chokes, and other subsurface flow control tools. We carry tools by Otis, Baker, and Site. We can set and pressure test plugs at surface for snubbing applications. For more details, give us a call at 1-888-843-3833.
 

Fishing Lost and Stuck Tools  back to top
There are a number of reasons why Wireline Fishing may be necessary. Equipment can fail or wear out, a human error could be made, or the well may conditions may be harsh. There could be paraffins, sand, scale, high temperatures, H2S and/or CO2. Any of these could cause problems with wirelines, tools, and seals.

Bonnett's Wireline Services has a simple set of guidelines that our operators follow for fishing procedures:

• Information is the key. The job gets discussed with our supervisors and input is gathered from our senior operators to get a clearer understanding of the job and get as many strategies as possible.
• Accurate records are kept of the lengths and diameters of each component of the tool string.
  Make sure to have ample lubricator. On a fishing job, the lube must be long enough to contain both the work tool string and the length of tools to be recovered.
• Use the BOP's. We pressure test the BOP's and make sure they are working properly. When wire is suspected, the BOP's are used to contain well pressure instead of a gate valve.
• Pros and Cons. Before running in the hole, the operator will consider the advantages and disadvantages of the tool, as well as the possible consequences. Other options are also evaluated.
• Check tools on surface. Before running in the hole, we make sure to check our tools and equipment to ensure that they will latch and/or release when needed.
• Impression blocks are used whenever necessary to give us an idea of the circumstances down hole.
• Have a Plan B. In the case that the first tool tried is unsuccessful, our operators will have a back-up plan or alternate strategy. Our operators always consider what the next step will be if a run does not result in the desired or anticipated outcome.
• Wire First. We attempt to remove broken wire first, then the tools.
• When fishing wire, a length of stem below the jars is used to prevent the jars from becoming fouled. Frequently, we will eschew the use of a link jar for a substantial tubular jar.
• Any recovered wire is kept and measured, so we can be aware of how much wire remains in the well after each step of the job.

Some of the tools we use for fishing operations include:

Swabbing  back to top
If you need to unload fluid or want to initiate flow, Bonnett's Wireline operators have the knowledge, experience and equipment for any swabbing job.

We have a variety of mandrels ranging from ¾” to 3½” and can swab from 1½” coil tubing to 7½” casing. We also have a wide selection of swabbing cups to handle any job.

Give us a call at 1-888-843-3833 and we can prove it.