Drill bit tools

Technical Specifications — Downhole Tools

Diamond Drill Bits — Ultra‑Deep Well Specialists

Parameter	Specification
Bit diameter range	3 3/4″ – 26″ (95 mm – 660 mm)
Types	Four‑blade KSF fast drilling pioneer diamond bit, impregnated diamond bits
Cutting mechanism	Circular superhard diamond composite sheets provide both drilling force and grinding force
Application	Ultra‑deep wells (>7,000 m), extremely hard/abrasive formations
Field validation	5,818 m "one trip drilling” national record in Tarim Basin

Hybrid Bits (Three‑Stage Cutting Technology)

Kingdream's patented three‑stage cutting toothed‑cone hybrid bit increases crushing stages from conventional two levels to three levels, solving problems of insufficient formation biting, low ROP, cutting tooth wear, and short service life. Widely applicable to drilling in complex formations such as interlayers, hard strata, and hard‑plastic beds.

Downhole Motors — KD Force Ultra High Torque Series

Parameter	Specification
Type	Positive displacement motor (PDM)
Characteristics	Super large torque output and uniform stress distribution
Advantage	Handles complex formations with ease, reduces risk of stress concentration and fatigue failure
Material	High‑strength alloy steel with advanced heat treatment
Integration	Designed to pair with Kingdream diamond and PDC bits for optimal performance

Drill Collars & Stabilizers

Parameter	Specification
Types	Slick drill collar, spiral drill collar, non‑magnetic drill collar, integral blade stabilizer, sleeve stabilizer
Connection	API Reg (varies by size)
Standard	API Spec 7‑1, API Spec 7‑2
Applications	Maintaining BHA stiffness, preventing differential sticking, providing stabilization in directional drilling

Rotary Subs — Lift, Crossover, Kelly Saver

Parameter	Specification
Types	Lift subs, crossover subs, bit subs, kelly saver subs
Material	AISI 4140 / 4145H modified alloy steel, fully heat treated
Hardness	Brinell 285 – 341
Impact strength	Minimum 40 ft‑lbs IZOD
Connections	API 7‑1 certified, cold‑rolled thread roots, phosphatized to prevent galling
Standard lengths	36″ or 48″ (custom lengths available)

API Connection Standards

All Kingdream downhole tools comply with:

• API Spec 7‑2 — Rotary shouldered connections for drilling tools, covering dimensional requirements, thread gauges, inspection methods

• API Spec 7‑1 — Rotary drill stem elements, covering kelly valves, square and hexagonal kellys, drill stem subs, drill collars, and drilling/coring bits

Product Types — Integrated Downhole Solutions

Kingdream's product portfolio is organized into three integrated categories:

1. Drill Bits (Full Range)

The foundation of any downhole tool string. Kingdream offers the complete API Spec 7‑2 compliant drill bit portfolio:

• Tricone bits (steel tooth — IADC 100–300 series): For soft to medium formations, economical top‑hole drilling

• Tricone bits (TCI — IADC 400–800 series): For medium‑hard to extremely hard, abrasive formations; premium tungsten carbide inserts; sealed journal bearings and metal face seals

• PDC bits: Steel body and matrix body; steel body for toughness and lower cost, matrix body for superior erosion resistance in hard formations; shaped‑cutter PDC bits for enhanced durability in highly abrasive sandstone formations; RSS PDC bits optimized for rotary steerable directional drilling

• Diamond bits: For ultra‑deep wells exceeding 7,000 m; four‑blade KSF fast drilling pioneer diamond drill bit; combined "drilling force” and "grinding force” through circular superhard diamond composite sheets

• Hybrid bits: Three‑stage cutting toothed‑cone hybrid bit (China Patent Excellence Award); combines PDC shear cutting and TCI crushing

2. Downhole Motors & Drilling Tools

Integrated power and drive solutions for complex trajectories:

• KD Force ultra‑high‑torque downhole motors — Super large torque output, uniform stress distribution, durable and reliable in complex formations

• Torque impactors — Reduce stick‑slip and torsional vibration, protect the BHA and bit

• Drilling jars — For freeing stuck pipe in directional and horizontal wells

3. BHA Components & Accessories

The connecting pieces that hold the tool string together:

• Drill collars: Slick, spiral and non‑magnetic options, sizes from 3 1/8″ to 10″

• Stabilizers: Integral blade and sleeve stabilizers to control wellbore trajectory and maintain BHA stiffness

• Rotary subs: Lift subs (handling BHA components), crossover subs (connecting different thread sizes/types), kelly saver subs (extending kelly life by absorbing connection wear)

Applications — Where Kingdream Drill Bit Tools Excel

Application	Formation Characteristics	Recommended Tool Configuration	Key Advantage
Ultra‑deep exploration (>7,000 m)	Extremely hard, high confining stress, ultra‑high temperature	Diamond bit + KD Force high torque motor	5,818 m one‑trip record proven
Horizontal / directional wells	Variable hardness, interbedded, build‑up sections	Shaped‑cutter/RSS PDC bit + PDM motor + stabilizers	Reduced steering adjustments, consistent build‑up
Complex interlayered formations	Alternating soft/hard beds, hard plastic, chert lenses	Three‑stage hybrid bit + torque impactor	Superior formation biting, solves conventional bit limitations
Middle East carbonate reservoirs	Hard, fractured carbonates, high abrasion	TCI tricone bits + crossover subs + drill collars	20%+ ROP improvement, field‑proven in Kuwait
Algerian complex strata	High geological complexity, technical bottlenecks	Sinopec full‑size drill bits + downhole motors	Breaking through complex strata constraints
Conventional land wells	Soft to medium shale, sandstone, limestone	Steel tooth tricone or PDC bit + kelly saver subs + stabilizers	Cost‑effective, high ROP
Unconventional shale gas wells	Shale with chert lenses, interbedded layers	High blade count PDC + downhole motor + drill collars	Vibration mitigation, consistent ROP
Offshore platform drilling	Variable, often with interbedded hard streaks	Matrix body PDC + BHA components with marine coatings	Long runs, reduced trips

Field Performance Highlight — Kuwait Oil Company (KOC)

Kingdream entered a long‑term drill bit service contract with Kuwait Oil Company (KOC) in 2022. Large‑size hybrid bits, shaped‑cutter PDC bits and RSS PDC bits have been widely applied, with average ROP improved by more than 20% through continuous product iteration in each oilfield block.

Field Performance Highlight — Algeria

In Algeria, Sinopec Equipment's full‑size drill bits have effectively broken through the technical bottlenecks of complex strata and contributed to oil and gas development. Taking local application cases as examples, Sinopec Equipment detailed the performance advantages and application results of drill bits and tools during its first product presentation in Algeria.

Field Performance Highlight — North America

Sinopec drill bits have been exported to North America as part of the company’s core product offering, alongside drilling tools and completions equipment. The main products exported to North America are drill bits, drilling tools, drilling equipment and completion tools.

Why Choose Kingdream as Your Drill Bit Tools Supplier

1. National Manufacturing Champion — Industry‑Highest Recognition
Kingdream has been honored as a National Manufacturing Single Item Champion Demonstration Enterprise for its roller cone bits — the highest recognition for Chinese manufacturing in the drill bit sector.

2. Complete Downhole Tool Strings — One Supplier, One Warranty
Unlike manufacturers that only supply bits or only supply accessories, Kingdream produces the complete sets of downhole tool strings — drill bits, KD Force ultra high torque downhole motors, torque impactors, drill collars, stabilizers, rotary subs and drilling accessories — under one roof. One supplier, one warranty, no finger‑pointing.

3. Field‑Proven Record — 5,818 m "One Trip Drilling”
The 5,818 m "one trip drilling” footage in Tarim Basin isn't a marketing claim — it’s a verified industry record that validates the effectiveness of Kingdream's integrated bit‑plus‑motor approach.

4. API 7‑2 and ISO 9001 Certified Across All Products
Kingdream successfully passed the 2025 API certification audit, including API Q1 / ISO 9001 quality management system, roller cone bit monogram surveillance audit, and diamond bit monogram recertification audit. All tools are manufactured under this certified quality management system with third‑party inspection available.

5. "Four‑Ultra” Technology — The Backbone of Innovation
The core "Four‑Ultra” technology system — ultra‑high pressure, ultra‑hard materials, ultra‑high control ability, and ultra‑high precision manufacturing — provides the technological foundation for continuous innovation in drill bits and tools, ensuring consistent breakthrough performance.

6. Integrated R&D and Field Service — Joint Testing, Not Just Sales
Sales personnel and technical service personnel work together on drilling sites, conducting joint tests and product selection with the customers. Kingdream's R&D and marketing are integrated, continuously promoting combined design and supply of drill bits and drilling tools.

7. Global Reach — 40+ Countries, All Major Continents
SOFE has exported products to more than 40 countries and regions across North America, South America, Russia, the Middle East, Africa and Asia.

8. Cost‑Competitive — 30–50% Lower than Premium Western Brands
Kingdream tool strings are typically priced 30–50% below comparable Western premium brands for equivalent API‑certified specifications, due to vertically integrated manufacturing and state‑owned enterprise resources. Lower price does not mean lower quality — Kingdream tools are proven in ultra‑deep wells, Kuwait's carbonate reservoirs and Algeria’s complex strata.

9. Service Chain for All Drilling Processes
Kingdream has established a service chain for the entire drilling process and has carried out effective services. Whether you need bit selection, motor sizing or drilling accessory specification, Kingdream's field team is available at your wellsite.

Frequently Asked Questions (FAQ)

Q1: What drill bit tools does Kingdream manufacture?

Kingdream manufactures a complete range of downhole tools: tricone bits (steel tooth & TCI), PDC bits, diamond bits, hybrid bits, downhole motors (KD Force series), torque impactors, drill collars (slick, spiral, non‑magnetic), stabilizers, rotary subs (lift, crossover, kelly saver), drilling jars, fishing tools and coring tools.

Q2: What is the size range for Kingdream diamond bits?

Kingdream's diamond bit sizes cover 3 3/4 to 26 inches to meet the needs of drilling projects. The bit that set the 5,818 m "one trip drilling” record was a 9 1/2‑inch four‑blade KSF fast drilling pioneer diamond drill bit.

Q3: What API certifications do Kingdream tools hold?

Kingdream successfully passed the 2025 API certification audit, including API Q1 / ISO 9001 quality management system surveillance, roller cone bit monogram surveillance, and diamond bit monogram recertification. All downhole tools comply with API Spec 7‑2 (rotary shouldered connections) and API Spec 7‑1 (rotary drill stem elements).

Q4: What is the difference between steel body and matrix body PDC bits for tool integration?

Steel body PDC bits are machined from high‑strength alloy steel. They offer excellent toughness and are less expensive, making them suitable for softer formations where erosion resistance is less critical. Matrix body PDC bits use a tungsten carbide matrix material cast around a steel core, providing far greater erosion and abrasion resistance. They are the preferred choice for hard, abrasive formations and high‑velocity drilling fluids — especially when paired with high‑torque downhole motors.

Q5: What are the main types of drill collars Kingdream offers?

Kingdream offers three types of drill collars: slick drill collar (smooth outer surface), spiral drill collar (spiral grooves to reduce differential sticking risk), and non‑magnetic drill collar (for directional drilling survey applications). Sizes range from 3 1/8″ to 10″.

Q6: What is a kelly saver sub, and why is it important?

A kelly saver sub is a short section of threaded pipe placed between the kelly and the drill string. It absorbs the connection wear each time it is made up to a drill stem component, extending the life of the expensive kelly by taking the connection wear. It can also be equipped with rubber or brass protectors to reduce BOP equipment and casing wear.

Q7: What size range do Kingdream drill bits cover?

Tricone bits: 3 7/8″ – 26″ diameter
PDC bits: 3 3/4″ – 17 1/2″ diameter

Q8: What is the typical lead time for Kingdream drill bit tools?

For standard sizes (8 1/2″, 12 1/4″) and common downhole tool configurations, typical lead time is 4–6 weeks from order confirmation to shipment. Custom tool string configurations (e.g., custom BHA design, special connections) require 6–8 weeks.

Q9: Can Kingdream supply a complete BHA (bottom hole assembly) for my well?

Yes. Kingdream can now produce the complete sets of downhole tool strings, including drill bits, KD Force ultra high torque downhole motors, torque impactors, drill collars, stabilizers and subs. The company continues to promote integrated design and supply of drill bits and drilling tools. Share your well plan and drilling parameters, and Kingdream's engineers will specify every component of the BHA.