"Deep di 1" leaps into 3-3 xc well
The well uses HPE PDC drills and large torque, which solves the problem of poor pdc drilling and easy pdc failure. The well adopts HPE company to solve the problems such as strong abrasiability and difficult feeding in the deep formation of the ultra-deep well.
The 593.7mm large-size mixed drill bit of HPE company was used to solve the problem of low gravel footage in the middle of the artesian well group, and realized the drilling through of 28m thick gravel layer.
Yuejin 3-3XC oil and gas well is an oil and gas well deployed by Sinopec in Shunbei oil and gas field of Tarim Basin. It is located in Shaya County and the edge of Taklimakan Desert in Aksu Region of Xinjiang. The well is expected to drill at a depth of 9,472 meters, setting a new record for the deepest oil and gas well in Asia.
When the well is 9,000 meters deep, the bottom temperature usually reaches 200 degrees Celsius, and the formation pressure is above 150 mpa. The Tarim Basin ranks first in seven of the world's thirteen measures of drilling difficulty.
The following is a comparative analysis of the main technical changes of API SPEC 7-1 version 10 (2022) and ANSI / API SPEC 7-1 version 1 (2006), based on the official API revision instructions and industry interpretation literature:
1. Standard frame upgrade
2006 Edition | 2022 Edition | Change the meaning |
| Only covers drill collar, drills and other basic parts | New specification for downhole motor (PDM) and drilling measuring tool (MWD / LWD) | Adapt to the development of directional drilling and intelligent tools |
| No digital delivery requirements | New digital twin model data format (based on ISO 15926 standard) | Push the full life cycle management of the drilling column components |
2. Upgrade of the key technical parameters
| parameter | The 2006 edition requirements | 2022 edition requirements | Change the impact |
| Composite sheet bond strength | 200 MPa (room temperature) | 220 MPa (including 150℃ high temperature test) | Deal with the high temperature environment of deep Wells |
| Dynamic balance level | Grade G6.3 (6.3 mm / s vibration) | Grade G2.5 (2.5 mm / s vibration) | Reduce the risk of downhole tool failure |
| Diamond layer thickness | No clear lower limit | 1.2 mm (CT scan verification) | Prevent diamond layer |
| parameter | The 2006 edition requirements | 2022 edition requirements | Change the impact |
| Bearing sealing pressure | 20 MPa (static) | 35 MPa (dynamic cycle test) | Improve the reliability of the bearings in a high-pressure mud environment |
| Tooth wheel axial gap | ≤0.25 mm | 0.15 mm (laser measurement) | Reduce early failure due to partial wheel grinding |
| Welding joint impact toughness | 27 J (room temperature) | 40 J (-20℃ Low temperature test) | Adapt to the polar and deep-sea drilling environments |
3. Manufacturing process control reinforcement
| domain | 2006 Edition | 2022 Edition | Example of new requirements |
| welding procedure | Only the welder qualification certification is required | Forced digital welder parameter traceability (current / voltage / speed recorded per second) | Prevent manual operation from fluctuating |
| nondestructive examination | Ultrasonic detection (UT) is optional | Phased array ultrasound (PAUT) + DR digital ray double check force | Increase the microcrack detection rate |
| Assembly tolerance | Digital assembly verification is not specified | Alignment of 3D scan point cloud with CAD model (deviation 0.05 mm) | Ensure the matching accuracy of the downhole tools |
4. Test method innovation
| test item | The 2006 version method | The 2022 edition method | Technology upgrade point |
| Bearing life test | Constant load cycle test | Random alternating load spectrum test (simulated real well condition) | More close to the actual working conditions |
Composite sheet heat shock test | Water quenching after heating at 800℃ | Gradient thermal shock test (300℃ 800℃ cycle) | Verify the extreme temperature difference tolerance |
| Material cleanliness test | On metalgraphic microscopy | ASPEX autoinclusion analysis (per ASTM E2142) | Quantifying the distribution of the nonmetallic inclusions |
5. New core chapters
1. Section 8.4: Digital Twin and Predictive Maintenance
The drill bit manufacturer is required to provide a ISO 13374-based fault prediction model
Provide downhole data return frequency (1 Hz) and storage format (OPC UA standard)
2. Appendix H: Environmental Protection and Sustainability Requirements
Limit the use of carbide carbide containing 5% cobalt (reduce the risk of environmental pollution)
New carbon footprint tracking (full cycle data from raw materials to scrap recovery)
6. Industry impact analysis
1. Manufacturing end: the traditional welding / assembly process that relies on the experience of the old master needs to switch to the digital process package (WPS 4.0), for example:
1. Cold metal transition (CMT) welding robot (reduce heat input deformation)
2. PDC composite sheet bonding should be controlled by vacuum brazing furnace + infrared temperature field
2 Testing end: eliminate manual visual detection, forced to adopt:
1.AI visual crack recognition system (e. g., deep learning module of Olympus OmniScan X3)
2. Aemission emission monitoring (abnormal friction warning in bearing assembly process)
Official API documents:
API SPEC 7-1 2022 Edition Redline
API Technical Report 7TR1:2023
Industry interpretation:
SPE Paper, Impact of API SPEC 7-1 Edition 10 on Intelligent Drill Design (SPE-209356-MS, 2022)
Petroleum Machinery, 2023, "The Technology Upgrade Path of Drilling Column components from API Standard iteriteration"
