Tex. Civil Practice and Remedies Code § 41.0115

(a) On the motion of a party and after notice and a hearing, a trial court may authorize discovery of evidence of a defendant's net worth if the court finds in a written order that the claimant has demonstrated a substantial likelihood of success on the merits of a claim for exemplary damages. Evidence submitted by a party to the court in support of or in opposition to a motion made under this subsection may be in the form of an affidavit or a response to discovery.

(b) If a trial court authorizes discovery under Subsection (a), the court's order may only authorize use of the least burdensome method available to obtain the net worth evidence.

(c) When reviewing an order authorizing or denying discovery of net worth evidence under this section, the reviewing court may consider only the evidence submitted by the parties to the trial court in support of or in opposition to the motion described by Subsection (a).

(d) If a party requests net worth discovery under this section, the court shall presume that the requesting party has had adequate time for the discovery of facts relating to exemplary damages for purposes of allowing the party from whom net worth discovery is sought to move for summary judgment on the requesting party's claim for exemplary damages under Rule 166a(i), Texas Rules of Civil Procedure.