CN104130357B - A kind of production method of drilling fluid filtrate reducer - Google Patents

Abstract

The invention discloses the production method of a kind of drilling fluid filtrate reducer, raw materials for production are powdery plant straw, sodium hydroxide solution, water etc..Owing to being that to use straw be primary raw material, thus not only production scale can not be limited, and can also reduce production cost simultaneously.

Description

A kind of production method of drilling fluid filtrate reducer

Technical field

The present invention relates to oil exploration technology field, particularly to the production method of a kind of drilling fluid filtrate reducer.

Background technology

At present, the fluid loss agent used by each oil field drilling fluids mostly is hydrolyzed polyacrylonitrile ammonium salt, and owing to the raw materials for production of hydrolyzed polyacrylonitrile ammonium salt are acrylon hairs, and acrylon hair is relatively costly so that existing fluid loss agent production cost is higher, it is impossible to be enough widely used.

Summary of the invention

The technical problem to be solved is that existing dehydration agent production cost is higher.To this end, the present invention provides the production method of a kind of drilling fluid filtrate reducer.

For solving above-mentioned technical problem, the invention provides the production method of a kind of drilling fluid filtrate reducer, described method includes (by mass content):

Powdery plant straw is delivered in reactor, adds and described powdery plant straw mass ratio is the sodium hydroxide solution of 40%, 110 DEG C-130 DEG C, react 3-5 hour under the conditions of 1.5Mpa-3.0Mpa；Wherein, the solution concentration of described sodium hydroxide solution is 1%-5%；Described powdery plant straw be degree of grinding be the straw of 20 mesh-50 mesh；

By total mass ratio be the water of 35%-45%, total mass ratio be the acrylic acid of 0.9%-1.5%, total mass ratio be the 2-acrylamide-2-methylpro panesulfonic acid of 0.5%-1%, total mass ratio be that the potassium hydroxide of 0.5%-1.5% is delivered in described reactor successively, 20 DEG C-30 DEG C, react 20-40 minute under 1 atmospheric pressure；Wherein, described gross mass refers specifically to the quality summation of described powdery plant straw and described sodium hydroxide solution；

The dispensing that obtain will be delivered in process tank after reaction, 40 DEG C-60 DEG C, stirring 20 minutes-40 minutes under 1 atmospheric pressure；

In described process tank, add the formaldehyde of 1.5%-3%, 40 DEG C-60 DEG C, stir 20 minutes-40 minutes under 1 atmospheric pressure；

The stirring material obtained after stirring is delivered in drying equipment, dries under the conditions of 40 DEG C-120 DEG C；

It is 20 mesh-30 mesh powders that the dispensing obtained after drying is delivered to crusher for crushing, to obtain described fluid loss agent.

The production method of a kind of drilling fluid filtrate reducer that the present invention provides, raw materials for production are powdery plant straw, sodium hydroxide solution, water etc..Owing to being that to use straw be primary raw material, thus not only production scale can not be limited, and can also reduce production cost simultaneously.

Further, the production method of a kind of drilling fluid filtrate reducer that the present invention provides, in process of production, have only to add raw materials in reactor, making it produce chemical reaction, be then just obtained in that fluid loss agent by steps such as dry, pulverizing, production process is simple, cost-effective, and can large-scale production.

Accompanying drawing explanation

Fig. 1 is the production method flow chart of drilling fluid filtrate reducer in the embodiment of the present invention.

Detailed description of the invention

In order to make the application the technical staff in the technical field be more clearly understood that the application, below in conjunction with the accompanying drawings, by specific embodiment, technical scheme is described in detail.

The invention provides the production method of a kind of drilling fluid filtrate reducer.

Refer to Fig. 1 below, the method includes (by mass content):

S1: be delivered in reactor by powdery plant straw, adds and powdery plant straw mass ratio is the sodium hydroxide solution of 40%, 110 DEG C-130 DEG C, react 3 hours-5 hours under the conditions of 1.5Mpa-3.0Mpa.

Wherein, straw can be Semen Maydis, Semen Tritici aestivi etc. straw.

It is the sodium hydroxide solution of 40% with powdery plant straw mass ratio, specifically: (sodium hydroxide solution quality/powdery plant straw quality) × 100%=40%.

The solution concentration of sodium hydroxide solution is 1%-5%；Powdery plant straw be degree of grinding be the straw of 20 mesh-50 mesh.

S2: by total mass ratio be the water of 35%-45%, total mass ratio be the acrylic acid of 0.9%-1.5%, total mass ratio be the 2-acrylamide-2-methylpro panesulfonic acid of 0.5%-1%, total mass ratio be that the potassium hydroxide of 0.5%-1.5% is delivered in reactor successively, 20 DEG C-30 DEG C, react 20-40 minute under 1 atmospheric pressure.

Wherein, gross mass refers specifically to the quality summation of powdery plant straw and sodium hydroxide solution.

As a example by the water of 35%: (water quality/(powdery plant straw quality+sodium hydroxide solution quality)) × 100%=35%.

S3: the dispensing that obtain will be delivered in process tank after reaction, 40 DEG C-60 DEG C, stirring 20 minutes-40 minutes under 1 atmospheric pressure.

S4: add the formaldehyde of 1.5%-3% in process tank, 40 DEG C-60 DEG C, stir 20 minutes-40 minutes under 1 atmospheric pressure.

S5: the stirring material obtained after stirring is delivered in drying equipment, dries under the conditions of 40 DEG C-120 DEG C.

S6: it is 20 mesh-30 mesh powders that the dispensing obtained after drying is delivered to crusher for crushing, to obtain fluid loss agent.

In concrete implementation process, drilling fluid filtrate reducer production method is:

(1) it is crushed to 40-50 mesh powder through ball mill after Semen Maydis or wheat stalk being dried, adds the sodium hydroxide solution of mass ratio 40%, be placed in reactor 120 DEG C, react 4 hours under the conditions of 2Mpa.

Wherein, sodium hydroxide solution solution concentration is 2%.

(2) again in reactor add quality always than for 40% water, and be sequentially added into quality always than for 1.1% acrylic acid, quality always than for 0.8% 2-acrylamide-2-methylpro panesulfonic acid, quality always than for 0.8% potassium hydroxide, 25 DEG C, react 30 minutes under condition of normal pressure (1 atmospheric pressure)；

(3) reacted raw material is pumped in process tank 50 DEG C, stir 30 minutes under condition of normal pressure；

(4) in process tank, add the industrial formol of mass ratio 2.3% of raw material total amount again, 50 DEG C, stir 30 minutes under condition of normal pressure (1 atmospheric pressure)；

(5) taking out whole raw material and be placed in vulcanization bed, dry under the conditions of 80-100 DEG C, rear use ball mill to be dried carries out being crushed to 20-30 mesh and completes production.

Drilling fluid filtrate reducer is owing to being material based on straw, on its active ingredient molecule, the macro-radicals such as sulfonic group, carboxylic acid group, amide groups are introduced by chemical reaction, detect thereby through actual product, the performances such as it is apparent, dehydration all reach standard (Q/SY1089-2009), it is better than hydrolyzed polyacrylonitrile ammonium salt performance, and is suitable for the application (see table 1) of all kinds of drilling fluid systems.

Table 1

Drilling fluid filtrate reducer product can use three-in-one liner polychloroethylene film paper packaging bags to pack, and is placed in ventilating and cooling place storage, prevents from drenching with rain and sharp-pointed sharp weapon scratching in transportation, and using method is identical with the using method of hydrolyzed polyacrylonitrile ammonium salt.

The present invention is the production method that oil drilling provides a kind of drilling fluid filtrate reducer, due to the method be use straw be primary raw material to produce drilling fluid filtrate reducer, thus not only production scale can not be limited, and can also reduce production cost simultaneously.

Although having been described for the preferred embodiment of the application, but one of ordinary skilled in the art once knows basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the application scope.

Obviously, those skilled in the art can carry out various change and modification without deviating from spirit and scope to the application.So, if these amendments of the application and modification belong within the scope of the application claim and equivalent technologies thereof, then the application is also intended to comprise these change and modification.

Claims (1)

1. the production method of a drilling fluid filtrate reducer, it is characterised in that described method includes (by quality Content):

Powdery plant straw is delivered in reactor, adds and described powdery plant straw mass ratio is The sodium hydroxide solution of 40%, 110 DEG C-130 DEG C, react 3-5 hour under the conditions of 1.5Mpa-3.0Mpa； Wherein, the solution concentration of described sodium hydroxide solution is 1%-5%；Described powdery plant straw is to pulverize journey Degree is the straw of 20 mesh-50 mesh；

By total mass ratio be the water of 35%-45%, total mass ratio be the acrylic acid of 0.9%-1.5%, total mass ratio 2-acrylamide-2-methylpro panesulfonic acid, total mass ratio for 0.5%-1% are the potassium hydroxide of 0.5%-1.5% Be delivered to successively in described reactor, 20 DEG C-30 DEG C, react 20-40 minute under 1 atmospheric pressure；Wherein, Described gross mass refers specifically to the quality summation of described powdery plant straw and described sodium hydroxide solution；

The dispensing that obtain will be delivered in process tank after reaction, 40 DEG C-60 DEG C, stirring 20 under 1 atmospheric pressure Minutes-40 minutes；

In described process tank, add the formaldehyde of 1.5%-3%, 40 DEG C-60 DEG C, stir 20 under 1 atmospheric pressure Minutes-40 minutes；

The stirring material obtained after stirring is delivered in drying equipment, dries under the conditions of 40 DEG C-120 DEG C；

It is 20 mesh-30 mesh powders that the dispensing obtained after drying is delivered to crusher for crushing, to obtain State fluid loss agent.