Weatherford Company adopts RFID technology for hole expansion while drilling

As the complexity of the wellbore increases, the operating efficiency of conventional reamers and circulation heads decreases. These Tools increase drilling costs because they require multiple trips out of the hole for mechanical or hydraulic activation.

In recent years, RFID (radio frequency identification) wireless radio frequency identification technology has begun to be used in the oil and gas industry. The innovative application of active and passive radio frequency identification (RFID) technology provides a wider range of operations for well control and surface management systems. space. Active RFID technology can assist in hole expansion operations, achieve wellbore cleaning, and reduce the probability of shrinkage. Passive RFID provides a strong guarantee for accurate drill feeding, improving the safety and efficiency of operations.

In late February 2016, Weatherford completed a reaming operation while drilling off the coast of Russia's Sakhalin Island, which not only met the operator's requirements to develop a well section of 3,641 feet (1,110 meters) offshore. The eye size was expanded from 8 to 9°, and, compared with conventional operations, 52 hours of drilling cycle was saved.

Weatherford Company has developed two reamer bottom hole tool assemblies, including the RipTide reaming tool while drilling and the RipTide post-drilling reaming tool. Weatherford Company uses radio frequency identification technology to enable the reaming tool to be remotely and automatically switched on and off after being lowered. Drilling operators can also ensure the cleanliness of the wellbore in a single operation while reaming the hole, further reducing the need for diameter reduction. The probability.

According to the company, due to the need to clean the wellbore, the number of trips will increase during the drilling process, and RFID tools can ensure the cleanliness of the wellbore, so it has significant advantages in terms of time, cost and efficiency. .

During the drilling process, if shrinkage occurs, RFID technology and pressure circulation can be used to activate the reamer while drilling to expand the hole.

Tool description

Weatherford's RipTide reaming-while-drilling tool enables concentric reaming operations without causing damage to the casing. In addition, the reamer can be used in conjunction with the Rotary Steerable System (RSS) (or Rotary BHA) while reaming while drilling.

In addition to expanding the wellbore in open holes, this tool can also significantly reduce the shrinkage of the wellbore after using this tool. In addition, operators can install two RipTide reamers on the same string of pipe being run downhole. The primary reamer is installed above the MWD or LWD tool, and the second reamer is installed below the MWD or LWD. Above the drill and RSS.

The two reamers use RFID technology and hydraulic control to activate or deactivate multiple times independently. The main reamer is activated through RFID: an RFID annunciator is placed from the ground into the drill pipe and is carried to the bottom of the well by the drilling fluid. The annunciator transmits instructions to the identifier that controls the reamer tool. After recognizing the instructions, the reamer The blades extend out from the inside of the eye expander to achieve eye expansion. The second reamer is activated or deactivated based on changes in pressure. Original oil circle, oil circle public account: oilsns

Application scope

1. A single operation can realize reaming while drilling; 2. It can achieve concentric reaming without damaging the casing, allowing larger size technical casing to be run; 3. The drilling section can be aligned Carry out hole expansion operations and can be applied to a variety of formations; 4. It can reduce the annular flow rate, effectively control the equivalent circulation density of drilling fluid, and reduce the risk of well kick; 5. It is helpful for the installation of downhole expansion pipes and open holes, gravels Filling and large-size liner completion operations; 6. Optimize cementing operations; 7. Reduce the probability of diameter reduction.

RipTide Advantages

1. The RipTide reaming tool while drilling can install two reaming tools at the same time during operation and use two methods to activate them. In this way, the same drill string can perform reaming operations in the same wellbore, which improves the efficiency of the operation. and flexibility, reducing non-productive time. Original oil circle, oil circle public account: oilsns

2. The reamer has two activation methods: radio frequency identification and pressure cycle, and the reamer can be activated and closed unlimited times during tripping and drilling operations.

3. Generally, the logging while drilling tool MWD or LWD cannot be used when pitching (controlling the reamer). If RFID technology is used to activate the main reamer above the MWD or LWD, it can replace the pitching operation to control the opening and closing of the reaming tool, and the logging-while-drilling tool MWD or LWD can be used simultaneously with the reaming tool.

4. In addition, the second reaming tool below the MWD or LWD is activated through pressure circulation to prevent the RFID from having difficulty penetrating the logging while drilling tool MWD or LWD and being unable to control the second reaming tool.

5. When necessary, the reamer needs to operate at a low flow rate to protect fragile formations and prevent underground accidents.

6. The wireless radioactive source of RFID can be directly put into the wellbore. Compared with conventional hole expansion operations, the use of RFID technology can save operation time and costs.

7. The reamer can record underground operating parameters, such as vibration, pressure and temperature, etc., allowing operators to have a detailed understanding of underground conditions.

8. Two reamers can be installed on the same drill tool assembly for reaming operations, and the two reamers are independently controlled, thus improving operating efficiency.

9. The blades inside the reamer are embedded, which can reduce vibration and extend the life of the cutting teeth.

10. The blades of the reamer can be expanded or contracted, which can save a lot of drilling time and costs.