Information on the use of the drill bit of the outer flat drill pipe and the rock formation

Classification:

Company News

Release time:

2019-08-19

【Summary Description】 Information on the use of the drill bit of the outer flat drill pipe and the rock formation

外平钻杆

1.Outside flat drill pipeofContents of bit usage data collection

1Formation lithology

The lithology and hardness of the formation are different, the rock breaking mechanism is different, and the form of bit failure is also different. The rock physical and mechanical properties of the formation lithology common in the drilling of various oilfields in China have been measured. Analyze the hardness, plasticity, brittleness, abrasiveness and drillability of the formation rock according to the formation lithology collected on site and the drilling time record of each meter lithology, and confirm whether the type selection and use of the drill bit are reasonable according to the failure mode of the drill bit.

2Position of well interval

Rocks in different positions in the earth's crust, the mechanical properties of their rocks vary greatly. Deeper buried rocks are in a multi-directional compressive stress state, which reduces rock pores and increases strength. The rock in the upper well section is generally loose and soft,Outside flat drill pipeofHigh drill speed and low drill pressure. The lower section of the well is generally hard rock, abrasive, low bit speed, high weight, long service time. Analyze the hardness, plasticity, brittleness, abrasiveness and drillability characteristics of the formation rock according to the collected interval location and lithology drilling time records per meter, and confirm whether the bit selection and use are reasonable against the failure mode of the bit.

3Well structure

different well bore structures,Outside flat drill pipeofThe size, type and use of the drill bit have special requirements. For example, the skew drill is generally required to have trimming teeth or diameter-preserving structure, and the use requires high rotation speed and low drilling pressure. Collect data such as borehole structure, bit selection and use parameters, and confirm whether bit selection and use are reasonable according to the failure form of bit.

外平钻杆

Key words:

weilida drill