Songke No.2 Well, Continental Deep Scientific Drilling Project, Songliao Basin

Release time:

2024-10-18

2018 Institute of Exploration Technology, Chinese Academy of Geological Sciences

design of the calendar

Design hole depth6400n, pore diameter 152m, cobalt crossing Baijian continental strata

Final Hole Overview

Final hole depth7018.0m, final hole diameter 152m

Equipment

Full hydraulic top wheel 10,000 meters continental scientific drilling rig"Crust One", drilling platform, blowout preventer, screw motor, turbine motor,
High-speed turbine motor, hydraulic hammer, full hydraulic disassembly frame

Formation information

Shale, siltstone, strongly cemented sandstone, gravel and conglomerate

Construction characteristics

1. One of the main purposes of the Songke 2 well project is to obtain the in-situ formation of the Baiwuji in the Songliao Basin and to obtain continuous core data.
2. In order to realize same-diameter coring in three-opening and four-opening, two large-diameter coring drilling tests of φ311.1 and φ215.9 were completed in two-opening.
The original and in-situ core diameter taking rate is not less95%, core diameter not less than 90n
3. coring section: 1086-1147m,1182-1256m,2863-7018m, coring effect: coring footage totals 4279n, obtaining rock
Heart4135m, core taking rate 96.65
4. Centercore drilling tool:φ311 caliber core drilling, with a core diameter of 214mm;φ216mm diameter core drilling, core diameter 124mm;φ152 □ diameter core drilling, core diameter 92m
5.φ311 super-large diameter grid dry meter continuous coring, the temperature will rise by 3c "4 ℃ for every 100m drilling down.

Drilling process scheme

 

Process technology point

open

Opening: drilling tools+φ660.4 bit drilling 440.96m

1, KT311/KT216/KT152 silver welding diamond drill bit subjected to 241 ℃ high temperature 3
inspection, complete from4528-7018m continuous coring drilling; Global Gan drill word white
Scientific drilling wells to terrestrial formations; overcame ultra-high temperature drilling and large-diameter drilling.
key technical challenges such as coring; created311m large diameter continuous coring longest.
World record for longest single-round coring with three different calibers
Jinshi Drilling is the deepest continental scientific drilling in sub-testing countries."Matsuke Erjing"
One of the main participants in the study. The project applies gold and stone drilling bits, drilling tools, and departments.
Products are displayed in the National Exhibition Hall of Major Scientific and Technological Achievements

Orifice pipe:φ500T pipe depth about 440.96m

Second opening

drilling: drilling tools+φ444.5 drill bit

Technical casing:φ339.7 casing depth is about 2806.20m

Three open

Drilling in:KT298 single-action drilling tool 311 diamond bit

Technical casing:φ244.5 casing depth is about 4528.90m

Four open

Drilling in:KT194 single-action drilling tool 194 diamond bit

Technical casing:φ177.8 casing depth is about 5911.10m

Five open

drilling: drilling tools+φ152 bit to 7018.00m

Drilling Process Structure Diagram

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